Jerome Yesavage

All Publications

• Altered Microstructural Caudate Integrity in Posttraumatic Stress Disorder but Not Traumatic Brain Injury. PloS one Waltzman, D., Soman, S., Hantke, N. C., Fairchild, J. K., Kinoshita, L. M., Wintermark, M., Ashford, J. W., Yesavage, J., Williams, L., Adamson, M. M., Furst, A. J. 2017; 12 (1)

  Abstract

  Given the high prevalence and comorbidity of combat-related PTSD and TBI in Veterans, it is often difficult to disentangle the contributions of each disorder. Examining these pathologies separately may help to understand the neurobiological basis of memory impairment in PTSD and TBI independently of each other. Thus, we investigated whether a) PTSD and TBI are characterized by subcortical structural abnormalities by examining diffusion tensor imaging (DTI) metrics and volume and b) if these abnormalities were specific to PTSD versus TBI.We investigated whether individuals with PTSD or TBI display subcortical structural abnormalities in memory regions by examining DTI metrics and volume of the hippocampus and caudate in three groups of Veterans: Veterans with PTSD, Veterans with TBI, and Veterans with neither PTSD nor TBI (Veteran controls).While our results demonstrated no macrostructural differences among the groups in these regions, there were significant alterations in microstructural DTI indices in the caudate for the PTSD group but not the TBI group compared to Veteran controls.The result of increased mean, radial, and axial diffusivity, and decreased fractional anisotropy in the caudate in absence of significant volume atrophy in the PTSD group suggests the presence of subtle abnormalities evident only at a microstructural level. The caudate is thought to play a role in the physiopathology of PTSD, and the habit-like behavioral features of the disorder could be due to striatal-dependent habit learning mechanisms. Thus, DTI appears to be a vital tool to investigate subcortical pathology, greatly enhancing the ability to detect subtle brain changes in complex disorders.

  View details for DOI 10.1371/journal.pone.0170564

  View details for PubMedID 28114393

  View details for PubMedCentralID PMC5256941

• Principal components analysis of agitation outcomes in Alzheimer's disease JOURNAL OF PSYCHIATRIC RESEARCH Yesavage, J. A., Taylor, J. L., Friedman, L., Rosenberg, P. B., Lazzeroni, L. C., Leoutsakos, J. S., Kinoshita, L. M., Perlow, M. J., Munro, C. A., Devanand, D. P., Drye, L. T., Mintzer, J. E., Pollock, B. G., Porsteinsson, A. P., Schneider, L. S., Shade, D. M., Weintraub, D., Lyketsos, C. G., Noda, A. 2016; 79: 4-7

  Abstract

  We developed a composite measure of agitation as a secondary outcome of change over time in the Citalopram for Agitation in Alzheimer's disease study (CitAD). CitAD demonstrated a positive effect of citalopram on agitation on the Neurobehavioral Rating Scale agitation subscale (NBRS-A). CitAD included additional agitation measures such as the Cohen-Mansfield Agitation Inventory and the Neuropsychiatric Inventory.We performed principal components analyses on change in individual item of these scales for the same, original CitAD subjects.The first principal component accounted for 12.6% of the observed variance and was composed of items that appear to reflect agitation. The effect size for citalopram calculated using this component was 0.53 (95% CI 0.22-0.83) versus 0.32 for the NBRS-A (95% CI 0.01-0.62).Results suggest that a composite measure of change in agitation might be more sensitive than change in a single primary agitation measure.

  View details for DOI 10.1016/j.jpsychires.2016.04.004

  View details for Web of Science ID 000378179000002

  View details for PubMedID 27115509

• Effects of Citalopram on Neuropsychiatric Symptoms in Alzheimer's Dementia: Evidence From the CitAD Study AMERICAN JOURNAL OF PSYCHIATRY Leonpacher, A. K., Peters, M. E., Drye, L. T., Makino, K. M., Newell, J. A., Devanand, D. P., Frangakis, C., Munro, C. A., Mintzer, J. E., Pollock, B. G., Rosenberg, P. B., Schneider, L. S., Shade, D. M., Weintraub, D., Yesavage, J., Lyketsos, C. G., Porsteinsson, A. P. 2016; 173 (5): 473-480

  Abstract

  Citalopram has been shown to improve agitation in patients with Alzheimer's disease. The authors evaluated whether other neuropsychiatric symptoms improve with citalopram treatment compared with placebo.In this planned secondary analysis of the Citalopram for Agitation in Alzheimer's Disease study, the authors evaluated the effect of citalopram on the 12 neuropsychiatric symptom domains assessed by the Neuropsychiatric Inventory (NPI). They compared caregiver-reported NPI scores at week 9 in patients receiving citalopram (30 mg/day) or placebo with regard to both the presence or absence of individual neuropsychiatric symptoms and individual domain scores (reflecting severity) in participants who had symptoms at week 9.At week 9, participants treated with citalopram were significantly less likely to be reported as showing delusions (odds ratio=0.40), anxiety (odds ratio=0.43), and irritability/lability (odds ratio=0.38). A comparison of median scores of participants with symptoms present at week 9 showed significant differences favoring citalopram for hallucinations and favoring placebo for sleep/nighttime behavior disorders.While dosage constraints must be considered because of citalopram's adverse effect profile, this agent's overall therapeutic effects in patients with Alzheimer's disease and agitation, in addition to efficacy for agitation/aggression, included reductions in the frequency of irritability, anxiety, and delusions; among patients who had these symptoms at week 9, they included a reduction in the severity of hallucinations but an increase in the severity of sleep/nighttime behavior disorders.

  View details for DOI 10.1176/appi.ajp.2016.15020248

  View details for Web of Science ID 000375291500010

  View details for PubMedID 27032628

• Heterogeneity of Treatment Response to Citalopram for Patients With Alzheimer's Disease With Aggression or Agitation: The CitAD Randomized Clinical Trial AMERICAN JOURNAL OF PSYCHIATRY Schneider, L. S., Frangakis, C., Drye, L. T., Devanand, D. P., Marano, C. M., Mintzer, J., Mulsant, B. H., Munro, C. A., Newell, J. A., Pawluczyk, S., Pelton, G., Pollock, B. G., Porsteinsson, A. P., Rabins, P. V., Rein, L., Rosenberg, P. B., Shade, D., Weintraub, D., Yesavage, J., Lyketsos, C. G. 2016; 173 (5): 465-472

  Abstract

  Pharmacological treatments for agitation and aggression in patients with Alzheimer's disease have shown limited efficacy. The authors assessed the heterogeneity of response to citalopram in the Citalopram for Agitation in Alzheimer Disease (CitAD) study to identify individuals who may be helped or harmed.In this double-blind parallel-group multicenter trial of 186 patients with Alzheimer's disease and clinically significant agitation, participants were randomly assigned to receive citalopram or placebo for 9 weeks, with the dosage titrated to 30 mg/day over the first 3 weeks. Five planned potential predictors of treatment outcome were assessed, along with six additional predictors. The authors then used a two-stage multivariate method to select the most likely predictors; grouped participants into 10 subgroups by their index scores; and estimated the citalopram treatment effect for each.Five covariates were likely predictors, and treatment effect was heterogeneous across the subgroups. Patients for whom citalopram was more effective were more likely to be outpatients, have the least cognitive impairment, have moderate agitation, and be within the middle age range (76-82 years). Patients for whom placebo was more effective were more likely to be in long-term care, have more severe cognitive impairment, have more severe agitation, and be treated with lorazepam.Considering several covariates together allowed the identification of responders. Those with moderate agitation and with lower levels of cognitive impairment were more likely to benefit from citalopram, and those with more severe agitation and greater cognitive impairment were at greater risk for adverse responses. Considering the dosages used and the association of citalopram with cardiac QT prolongation, use of this agent to treat agitation may be limited to a subgroup of people with dementia.

  View details for DOI 10.1176/appi.ajp.2015.15050648

  View details for Web of Science ID 000375291500009

  View details for PubMedID 26771737

• Negative Tuberculin Skin Test and Prediction of Reversion of QuantiFERON Interferon Gamma Release Assay in US Healthcare Workers INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY Thanassi, W., Noda, A., Hernandez, B., Friedman, L., Dorman, S., Yesavage, J. 2016; 37 (4): 478-482

  View details for DOI 10.1017/ice.2015.324

  View details for Web of Science ID 000372796200018

• Developing a clinical translational neuroscience taxonomy for anxiety and mood disorder: protocol for the baseline-follow up Research domain criteria Anxiety and Depression ("RAD") project BMC PSYCHIATRY Williams, L. M., Goldstein-Piekarski, A. N., Chowdhry, N., Grisanzio, K. A., Haug, N. A., Samara, Z., Etkin, A., O'Hara, R., Schatzberg, A. F., Suppes, T., Yesavage, J. 2016; 16

  View details for DOI 10.1186/s12888-016-0771-3

  View details for Web of Science ID 000372738400001

• Sedation mediates part of Citalopram's effect on agitation in Alzheimer's disease. Journal of psychiatric research Newell, J., Yesavage, J. A., Taylor, J. L., Kraemer, H. C., Munro, C. A., Friedman, L., Rosenberg, P. B., Madore, M., Chao, S. Z., Devanand, D. P., Drye, L. T., Mintzer, J. E., Pollock, B. G., Porsteinsson, A. P., Schneider, L. S., Shade, D. M., Weintraub, D., Lyketsos, C. G., Noda, A. 2016; 74: 17-21

  Abstract

  We found a benefit of citalopram for agitation in the Citalopram for Agitation in Alzheimer's Disease study (CitAD), and wondered if this was mediated by a sedative effect. CitAD was a randomized, placebo-controlled, double-blind, parallel group trial conducted at 8 academic centers in the United States and Canada from August 2009 to January 2013. One hundred sixty-two participants with probable Alzheimer's disease (AD) and clinically significant agitation were analyzed in this study. Participants received a psychosocial intervention and were randomized to receive either citalopram or placebo (approximately half assigned to each group). Participants were rated on the Neurobehavioral Rating Scale Agitation subscale and measures of sedation (i.e., fatigue and somnolence).Using the MacArthur Foundation procedures for documenting a mediator effect, we performed a secondary analysis examining whether sedation mediates the effect of treatment on agitation outcome.We found a statistically significant mediating effect of sedation on agitation outcomes, but the magnitude of the effect was small, only explaining 11% of the variance in agitation, with a significant, but modest effect size of 0.16 (95% CI: 0.08 to 0.22).The benefit of citalopram was partly due to sedation but largely due to other mechanisms of action.

  View details for DOI 10.1016/j.jpsychires.2015.12.005

  View details for PubMedID 26736036

  View details for PubMedCentralID PMC4744510

• Ubiquity of Undiagnosed Sleep Disordered Breathing in Community-Dwelling Older Male Veterans. American journal of geriatric psychiatry Iqbal, N., Kinoshita, L. M., Noda, A., Friedman, L., Yesavage, J. A., Zeitzer, J. M. 2016; 24 (2): 170-173

  Abstract

  To determine the point prevalence of sleep disordered breathing (SDB) in a community-based sample of older male veterans and to determine if common markers of SDB apply to this population.Two hundred fourteen older male Veterans (age 55-89 years) were recruited for a study on post-traumatic stress disorder and cognitive decline. Questionnaires concerning anthropomorphic and psychological variables were obtained, as was an overnight polysomnographic examination of sleep.Only 13% of the participants lacked clinically meaningful SDB, whereas 33% had moderate SDB and 54% had severe SDB. Being overweight, self-reported snoring, and excessive daytime sleepiness all had good sensitivity (0.86-0.92) but very poor specificity (0.10-0.28) for the prediction of SDB.Undiagnosed SDB was more than threefold higher than expected in these community-dwelling older veterans. Traditional markers of SDB were not specific for predicting clinically relevant SDB.

  View details for DOI 10.1016/j.jagp.2015.08.004

  View details for PubMedID 26778348

• Effects of Posttraumatic Stress Disorder and Metabolic Syndrome on Cognitive Aging in Veterans. Gerontologist Green, E., Fairchild, J. K., Kinoshita, L. M., Noda, A., Yesavage, J. 2016; 56 (1): 72-81

  Abstract

  With the influx of veterans entering older adulthood, it is increasingly important to understand risk factors for cognitive decline. Posttraumatic stress disorder (PTSD) and the metabolic syndrome (MetS) are highly prevalent in older veterans. Although both increase risk for cognitive decline and often co-occur, it is unclear how they may interact to negatively impact cognition. The aim of this cross-sectional study was to investigate associations among PTSD, MetS, and cognitive function in older veterans. We hypothesized that co-occurring PTSD and MetS would be associated with worse cognitive performance than seen in either illness alone.Participants completed cognitive testing to assess processing speed, verbal memory, and executive function. Data from 204 male veterans aged 55-89 were analyzed with the use of hierarchical multiple regression models.Veterans with MetS demonstrated poorer performance on tasks of executive function (response inhibition and cognitive set shifting) and immediate verbal memory regardless of PTSD status. There was an interaction between MetS and PTSD on delayed verbal memory, suggesting that the negative impact of MetS on verbal memory was only significant for veterans not classified as having PTSD.This is the first study to examine the impact of comorbid PTSD and MetS on cognition. The results suggest that MetS is associated with poorer verbal learning and executive functioning independent of PTSD. We discuss the necessity of monitoring cerebrovascular risk factors and providing early behavioral and/or pharmaceutical interventions to lessen the risk of cognitive decline in older age.

  View details for DOI 10.1093/geront/gnv040

  View details for PubMedID 26220415

• The influence of physical and mental health symptoms on Veterans' functional health status JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT Sheng, T., Fairchild, J. K., Kong, J. Y., Kinoshita, L. M., Cheng, J. J., Yesavage, J. A., Helmer, D. A., Reinhard, M. J., Ashford, J. W., Adamson, M. M. 2016; 53 (6): 781-795

  View details for DOI 10.1682/JRRD.2015.07.0146

  View details for Web of Science ID 000393985100012

• Change in agitation in Alzheimer's disease in the placebo arm of a nine-week controlled trial INTERNATIONAL PSYCHOGERIATRICS Rosenberg, P. B., Drye, L. T., Porsteinsson, A. P., Pollock, B. G., Devanand, D. P., Frangakis, C., Ismail, Z., Marano, C., Meinert, C. L., Mintzer, J. E., Munro, C. A., Pelton, G., Rabins, P. V., Schneider, L. S., Shade, D. M., Weintraub, D., Newell, J., Yesavage, J., Lyketsos, C. G. 2015; 27 (12): 2059-2067

  View details for DOI 10.1017/S1041610215001106

  View details for Web of Science ID 000364938400015

  View details for PubMedID 26305876

• The STEP Model: Characterizing Simultaneous Time Effects on Practice for Flight Simulator Performance Among Middle-Aged and Older Pilots PSYCHOLOGY AND AGING Kennedy, Q., Taylor, J., Noda, A., Yesavage, J., Lazzeroni, L. C. 2015; 30 (3): 699-711

  Abstract

  Understanding the possible effects of the number of practice sessions (practice) and time between practice sessions (interval) among middle-aged and older adults in real-world tasks has important implications for skill maintenance. Prior training and cognitive ability may impact practice and interval effects on real-world tasks. In this study, we took advantage of existing practice data from 5 simulated flights among 263 middle-aged and older pilots with varying levels of flight expertise (defined by U.S. Federal Aviation Administration proficiency ratings). We developed a new Simultaneous Time Effects on Practice (STEP) model: (a) to model the simultaneous effects of practice and interval on performance of the 5 flights, and (b) to examine the effects of selected covariates (i.e., age, flight expertise, and 3 composite measures of cognitive ability). The STEP model demonstrated consistent positive practice effects, negative interval effects, and predicted covariate effects. Age negatively moderated the beneficial effects of practice. Additionally, cognitive processing speed and intraindividual variability (IIV) in processing speed moderated the benefits of practice and/or the negative influence of interval for particular flight performance measures. Expertise did not interact with practice or interval. Results indicated that practice and interval effects occur in simulated flight tasks. However, processing speed and IIV may influence these effects, even among high-functioning adults. Results have implications for the design and assessment of training interventions targeted at middle-aged and older adults for complex real-world tasks. (PsycINFO Database Record

  View details for DOI 10.1037/pag0000043

  View details for Web of Science ID 000360585600020

  View details for PubMedCentralID PMC4556540

• Sleep Quality and Risk of Dementia Among Older Male Veterans AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY Yaffe, K., Nettiksimmons, J., Yesavage, J., Byers, A. 2015; 23 (6): 651-654

  Abstract

  To determine whether a diagnosis of sleep disturbance is associated with dementia in older veterans.For this retrospective cohort study, we obtained medical record data from the Department of Veterans Affairs National Patient Care Database for 200,000 randomly selected veterans aged 55 years and older. Prevalent cases of dementia from the baseline period (2000-2003) were excluded, leaving an analytic sample of 179,738 male veterans. Follow-up took place from 2004 to 2011. The primary outcome was all-cause dementia, ascertained using International Classification of Disease, Ninth Revision codes. Sleep disturbance, the primary predictor, was also ascertained using these codes.After adjusting for potential confounders, those with sleep disturbance had a 27% increased risk of dementia (hazard ratio: 1.27; 95% confidence interval: 1.20-1.34).Sleep disturbance was associated with increased risk of dementia among a large cohort of older, primarily male veterans.

  View details for DOI 10.1016/j.jagp.2015.02.008

  View details for Web of Science ID 000354338100013

  View details for PubMedID 25794635

• Donepezil treatment in ethnically diverse patients with Alzheimer disease. American journal of geriatric psychiatry Tinklenberg, J. R., Kraemer, H. C., Yaffe, K., O'Hara, R., Ringman, J. M., Ashford, J. W., Yesavage, J. A., Taylor, J. L. 2015; 23 (4): 384-390

  Abstract

  To compare the outcome of donepezil treatment in ethnically diverse Alzheimer disease (AD) patients with ethnically diverse AD patients who did not receive donepezil.Patients meeting NINCDS-ADRA criteria for probable or possible AD from a consortium of California sites were systematically followed for at least 1 year in this prospective, observational study. Their treatment regimens, including prescription of donepezil, were determined by their individual physician according to his or her usual criteria. Patients self-identified their ethnicity.The 64 ethnically diverse AD patients who completed the study and received donepezil treatment had an average 1-year decline of 2.30 points (standard deviation: 3.9) on the 30-point Mini-Mental State Exam compared with a 1.70-point (standard deviation: 4.2) decline in the 74 ethnically diverse completers who received no donepezil or other anti-AD drugs during the study period. This difference was not statistically significant. The overall Cohen effect size of this treatment-associated difference was estimated at -0.15. After using propensity analyses and other techniques to assess factors that could bias prescribing decisions, the lack of benefits associated with donepezil treatment remained. The lack of donepezil benefits also remained when more traditional analyses were applied to these data.Ethnically diverse AD patients in this study apparently did not benefit from 1 year of donepezil treatment. These unpromising results are in contrast to modest benefits of donepezil treatment measured in a directly comparable California study involving white non-Latino AD patients.

  View details for DOI 10.1016/j.jagp.2014.09.007

  View details for PubMedID 25747405

• Verbal Naming Test for Use with Older Adults: Development and Initial Validation JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY Yochim, B. P., Beaudreau, S. A., Fairchild, J. K., Yutsis, M. V., Raymond, N., Friedman, L., Yesavage, J. 2015; 21 (3): 239-248

  Abstract

  Naming or word-finding tasks are a mainstay of the typical neuropsychological evaluation, particularly with older adults. However, many older adults have significant visual impairment and there are currently no such word-finding tasks developed for use with older visually impaired populations. This study presents a verbal, non-visual measure of word-finding for use in the evaluation of older adults with possible dysnomia. Stimuli were chosen based on their frequency of usage in everyday spoken language. A 60-item scale was created and given to 131 older Veterans. Rasch analyses were conducted and differential item functioning assessed to eliminate poorly-performing items. The final 55-item scale had a coefficient alpha of 0.84 and correlated with the Neuropsychological Assessment Battery Naming test, r=0.84, p<.01, Delis-Kaplan Executive Function System (D-KEFS) Category Fluency, r=0.45, p<.01, and the D-KEFS Letter Fluency, r=0.40, p<.01. ROC analyses found the measure to have sensitivity of 79% and specificity of 85% for detecting dysnomia. Patients with dysnomia performed worse on the measure than patients with intact word-finding, t(84)=8.2, p<.001. Patients with no cognitive impairment performed significantly better than patients with mild cognitive impairment, who performed significantly better than patients with dementia. This new measure shows promise in the neuropsychological evaluation of word-finding ability in older adults with or without visual impairment. Future directions include the development of a shorter version and the generation of additional normative data.

  View details for DOI 10.1017/S1355617715000120

  View details for Web of Science ID 000354027000007

  View details for PubMedID 25801537

• The impact of depression on Veterans with PTSD and traumatic brain injury: A diffusion tensor imaging study. Biological psychology Isaac, L., Main, K. L., Soman, S., Gotlib, I. H., Furst, A. J., Kinoshita, L. M., Fairchild, J. K., Yesavage, J. A., Ashford, J. W., Bayley, P. J., Adamson, M. M. 2015; 105: 20-28

  Abstract

  A significant proportion of military personnel deployed in support of Operation Enduring Freedom and Operation Iraqi Freedom were exposed to war-zone events associated with traumatic brain injury (TBI), depression (DEP) and posttraumatic stress disorder (PTSD). The co-occurrence of TBI, PTSD and DEP in returning Veterans has recently increased research and clinical interest. This study tested the hypothesis that white matter abnormalities are further impacted by depression. Of particular relevance is the uncinate fasciculus (UF), which is a key fronto-temporal tract involved in mood regulation, and the cingulum; a tract that connects to the hippocampus involved in memory integration. Diffusion tensor imaging (DTI) was performed on 25 patients with a combination of PTSD, TBI and DEP and 20 patients with PTSD and TBI (no DEP). Microstructural changes of white matter were found in the cingulum and UF. Fractional anisotropy (FA) was lower in Veterans with DEP compared to those without DEP.

  View details for DOI 10.1016/j.biopsycho.2014.12.011

  View details for PubMedID 25559772

• Higher Landing Accuracy in Expert Pilots is Associated with Lower Activity in the Caudate Nucleus PLOS ONE Adamson, M. M., Taylor, J. L., Heraldez, D., Khorasani, A., Noda, A., Hernandez, B., Yesavage, J. A. 2014; 9 (11)

  Abstract

  The most common lethal accidents in General Aviation are caused by improperly executed landing approaches in which a pilot descends below the minimum safe altitude without proper visual references. To understand how expertise might reduce such erroneous decision-making, we examined relevant neural processes in pilots performing a simulated landing approach inside a functional MRI scanner. Pilots (aged 20-66) were asked to "fly" a series of simulated "cockpit view" instrument landing scenarios in an MRI scanner. The scenarios were either high risk (heavy fog-legally unsafe to land) or low risk (medium fog-legally safe to land). Pilots with one of two levels of expertise participated: Moderate Expertise (Instrument Flight Rules pilots, n = 8) or High Expertise (Certified Instrument Flight Instructors or Air-Transport Pilots, n = 12). High Expertise pilots were more accurate than Moderate Expertise pilots in making a "land" versus "do not land" decision (CFII: d' = 3.62 ± 2.52; IFR: d' = 0.98 ± 1.04; p<.01). Brain activity in bilateral caudate nucleus was examined for main effects of expertise during a "land" versus "do not land" decision with the no-decision control condition modeled as baseline. In making landing decisions, High Expertise pilots showed lower activation in the bilateral caudate nucleus (0.97 ± 0.80) compared to Moderate Expertise pilots (1.91 ± 1.16) (p<.05). These findings provide evidence for increased "neural efficiency" in High Expertise pilots relative to Moderate Expertise pilots. During an instrument approach the pilot is engaged in detailed examination of flight instruments while monitoring certain visual references for making landing decisions. The caudate nucleus regulates saccade eye control of gaze, the brain area where the "expertise" effect was observed. These data provide evidence that performing "real world" aviation tasks in an fMRI provide objective data regarding the relative expertise of pilots and brain regions involved in it.

  View details for DOI 10.1371/journal.pone.0112607

  View details for Web of Science ID 000349145400020

  View details for PubMedID 25426935

• Nocturia Reported in Nightly Sleep Diaries: Common Occurrence With Significant Implications? HEALTH PSYCHOLOGY Bliwise, D. L., Friedman, L., Hernandez, B., Zeitzer, J. M., Kushida, C. A., Yesavage, J. A. 2014; 33 (11): 1362-1365

  View details for DOI 10.1037/a0034401

  View details for Web of Science ID 000344010300011

• Integration of Clinical and Research Neuroimaging to Understand Traumatic Brain Injury in the Veteran Population. Federal practitioner : for the health care professionals of the VA, DoD, and PHS Adamson, M. M., Main, K., Kong, J. Y., Soman, S., Furst, A., Kinoshita, L., Yesavage, J., Ashford, J. W. 2014; 31: 3S-7S

  Abstract

  There is a complex relationship between posttraumatic stress disorder and traumatic brain injury. To understand and treat these conditions, it is necessary to apply an integrated physical and mental health care approach to postdeployment care.

  View details for PubMedID 26705383

  View details for PubMedCentralID PMC4687744

• Recommendations for the use of Serious Games in people with Alzheimer's Disease, related disorders and frailty FRONTIERS IN AGING NEUROSCIENCE Robert, P. H., Koenig, A., Amieva, H., Andrieu, S., Bremond, F., Bullock, R., Ceccaldi, M., Dubois, B., Gauthier, S., Kenigsberg, P., Nave, S., Orgogozo, J. M., Piano, J., Benoit, M., Touchon, J., Vellas, B., Yesavage, J., Manera, V. 2014; 6

  Abstract

  Alzheimer's disease and other related disorders (ADRD) represent a major challenge for health care systems within the aging population. It is therefore important to develop better instruments to assess the disease severity and progression, as well as to improve its treatment, stimulation, and rehabilitation. This is the underlying idea for the development of Serious Games (SG). These are digital applications specially adapted for purposes other than entertaining; such as rehabilitation, training and education. Recently, there has been an increase of interest in the use of SG targeting patients with ADRD. However, this field is completely uncharted, and the clinical, ethical, economic and research impact of the employment of SG in these target populations has never been systematically addressed. The aim of this paper is to systematically analyze the Strengths, Weaknesses, Opportunities, and Threats (SWOT) of employing SG with patients with ADRD in order to provide practical recommendations for the development and use of SG in these populations. These analyses and recommendations were gathered, commented on and validated during a 2-round workshop in the context of the 2013 Clinical Trial of Alzheimer's Disease (CTAD) conference, and endorsed by stakeholders in the field. The results revealed that SG may offer very useful tools for professionals involved in the care of patients suffering from ADRD. However, more interdisciplinary work should be done in order to create SG specifically targeting these populations. Furthermore, in order to acquire more academic and professional credibility and acceptance, it will be necessary to invest more in research targeting efficacy and feasibility. Finally, the emerging ethical challenges should be considered a priority.

  View details for DOI 10.3389/fnagi.2014.00054

  View details for Web of Science ID 000333213700001

  View details for PubMedID 24715864

  View details for PubMedCentralID PMC3970032

• Effects of body mass index-related disorders on cognition: preliminary results. Diabetes, metabolic syndrome and obesity : targets and therapy Yesavage, J. A., Kinoshita, L. M., Noda, A., Lazzeroni, L. C., Fairchild, J. K., Taylor, J., Kulick, D., Friedman, L., Cheng, J., Zeitzer, J. M., O'Hara, R. 2014; 7: 145-151

  Abstract

  Well-known risk factors for cognitive impairment are also associated with obesity. Research has highlighted genetic risk factors for obesity, yet the relationship of those risk factors with cognitive impairment is unknown. The objective of this study was to determine the associations between cognition, hypertension, diabetes, sleep-disordered breathing, and obesity. Genetic risk factors of obesity were also examined.The sample consisted of 369 nondemented individuals aged 50 years or older from four community cohorts. Primary outcome measures included auditory verbal memory, as measured by the Rey Auditory Verbal Learning Test, and executive functioning, as measured by the Color-Word Interference Test of the Delis-Kaplan Executive Function System battery. Apnea-hypopnea index indicators were determined during standard overnight polysomnography. Statistical analyses included Pearson correlations and linear regressions.Poor executive function and auditory verbal memory were linked to cardiovascular risk factors, but not directly to obesity. Genetic factors appeared to have a small but measureable association to obesity.A direct linkage between obesity and poor executive function and auditory verbal memory is difficult to discern, possibly because nonobese individuals may show cognitive impairment due to insulin resistance and the "metabolic syndrome".

  View details for DOI 10.2147/DMSO.S60294

  View details for PubMedID 24855383

• Longitudinal assessment of sleep disordered breathing in Vietnam veterans with post-traumatic stress disorder. Nature and science of sleep Yesavage, J. A., Kinoshita, L. M., Noda, A., Lazzeroni, L. C., Fairchild, J. K., Friedman, L., Sekhon, G., Thompson, S., Cheng, J., Zeitzer, J. M. 2014; 6: 123-127

  Abstract

  Previous work has demonstrated the relatively high prevalence of risk factors for cognitive impairment, such as sleep disordered breathing (SDB) and obesity, in Vietnam War era veterans with post-traumatic stress disorder (PTSD). No data are currently available on the longitudinal stability of SDB as a risk factor for cognitive decline in that population, which this study now reports.Sample consisted of 48 veterans of the Vietnam War with PTSD who completed longitudinal sleep assessments over a 3-year period. The primary outcome measure, the Apnea-Hypopnea Index (AHI) indicator, was determined during standard overnight polysomnography. Body mass index (BMI) was calculated using standard measurements. Measures of cognitive function tapped auditory verbal memory as measured by the Rey Auditory Verbal Learning Test and executive functioning as measured by the Color-Word Interference Test of the Delis-Kaplan Executive Function System battery. Statistical analyses included mixed effects modeling.In this sample, AHI increased significantly by 2.19 points per year (β=2.19; P<0.005). AHI worsened over the 3-year period, increasing from a mean of 18.7±15.7 to 24.7±17.4 points. Neither BMI nor cognition showed significant change over the 3-year period.SDB worsened in a group of veterans of the Vietnam War with PTSD over a 3-year period. The worsening of SDB over time suggests the need for appropriate countermeasures in populations at risk for progression of the condition.

  View details for DOI 10.2147/NSS.S65034

  View details for PubMedID 25378962

  View details for PubMedCentralID PMC4219637

• Recommendations for ICT use in Alzheimer's disease assessment: Monaco CTAD expert meeting JOURNAL OF NUTRITION HEALTH & AGING Robert, P. H., Konig, A., Andrieu, S., Bremond, F., Chemin, I., Chung, P. C., Dartigues, J. F., Dubois, B., Feutren, G., Guillemaud, R., Kenisberg, P. A., Nave, S., Vellas, B., Verhey, F., Yesavage, J., Mallea, P. 2013; 17 (8): 653-660

  Abstract

  Alzheimer disease (AD) and other related dementia represent a major challenge for health care systems within the aging population. It is therefore important to develop better instruments for assessing disease severity and disease progression to optimize patient's care and support to care providers, and also provide better tools for clinical research. In this area, Information and Communication Technologies (ICT) are of particular interest. Such techniques enable accurate and standardized assessments of patients' performance and actions in real time and real life situations. The aim of this article is to provide basic recommendation concerning the development and the use of ICT for Alzheimer's disease and related disorders. During he ICT and Mental Health workshop (CTAD meeting held in Monaco on the 30th October 2012) an expert panel was set up to prepare the first recommendations for the use of ICT in dementia research. The expert panel included geriatrician, epidemiologist, neurologist, psychiatrist, psychologist, ICT engineers, representatives from the industry and patient association. The recommendations are divided into three sections corresponding to 1/ the clinical targets of interest for the use of ICT, 2/ the conditions, the type of sensors and the outputs (scores) that could be used and obtained, 3/ finally the last section concerns specifically the use of ICT within clinical trials.

  View details for DOI 10.1007/s12603-013-0046-3

  View details for Web of Science ID 000325432400003

  View details for PubMedID 24097018

• Intraindividual variability in basic reaction time predicts middle-aged and older pilots' flight simulator performance. journals of gerontology. Series B, Psychological sciences and social sciences Kennedy, Q., Taylor, J., Heraldez, D., Noda, A., Lazzeroni, L. C., Yesavage, J. 2013; 68 (4): 487-494

  Abstract

  ObjectivesIntraindividual variability (IIV) is negatively associated with cognitive test performance and is positively associated with age and some neurological disorders. We aimed to extend these findings to a real-world task, flight simulator performance. We hypothesized that IIV predicts poorer initial flight performance and increased rate of decline in performance among middle-aged and older pilots.MethodTwo-hundred and thirty-six pilots (40-69 years) completed annual assessments comprising a cognitive battery and two 75-min simulated flights in a flight simulator. Basic and complex IIV composite variables were created from measures of basic reaction time and shifting and divided attention tasks. Flight simulator performance was characterized by an overall summary score and scores on communication, emergencies, approach, and traffic avoidance components. RESULTS: Although basic IIV did not predict rate of decline in flight performance, it had a negative association with initial performance for most flight measures. After taking into account processing speed, basic IIV explained an additional 8%-12% of the negative age effect on initial flight performance.DiscussionIIV plays an important role in real-world tasks and is another aspect of cognition that underlies age-related differences in cognitive performance.

  View details for DOI 10.1093/geronb/gbs090

  View details for PubMedID 23052365

• Phenotyping apathy in individuals with Alzheimer disease using functional principal component analysis. American journal of geriatric psychiatry Zeitzer, J. M., David, R., Friedman, L., Mulin, E., Garcia, R., Wang, J., Yesavage, J. A., Robert, P. H., Shannon, W. 2013; 21 (4): 391-397

  Abstract

  To determine if there is a specific pattern of gross motor activity associated with apathy in individuals with Alzheimer disease (AD).Examination of ad libitum 24-hour ambulatory gross motor activity patterns.Community-dwelling, outpatient.Ninety-two individuals with AD, 35 of whom had apathy.Wrist actigraphy data were collected and examined using functional principal component analysis (fPCA).Individuals with apathy have a different pattern of gross motor activity than those without apathy (first fPCA component, p <0.0001, t = 5.73, df = 90, t test) such that there is a pronounced decline in early afternoon activity in those with apathy. This change in activity is independent of depression (p = 0.68, F[1, 89] = 0.05, analysis of variance). The decline in activity is consistent with an increase in napping. Those with apathy also have an early wake and bedtime (second fPCA component, t = 2.53, df = 90, p <0.05, t test).There is a signature activity pattern in individuals with apathy and AD that is distinct from those without apathy and those with depression. Actigraphy may be a useful adjunctive measurement in the clinical diagnosis of apathy in the context of AD.

  View details for DOI 10.1016/j.jagp.2012.12.012

  View details for PubMedID 23498386

• Which older adults maintain benefit from cognitive training? Use of signal detection methods to identify long-term treatment gains INTERNATIONAL PSYCHOGERIATRICS Fairchild, J. K., Friedman, L., Rosen, A. C., Yesavage, J. A. 2013; 25 (4): 607-616

  Abstract

  Cognitive training has been shown to improve memory in older adults; however, little is known about which individuals benefit from or respond best to training in the long term. Identification of responders' characteristics would help providers match cognitive interventions to individuals to improve their effectiveness. Signal detection methods may prove more informative than more commonly used analytic methods. The goal of the current study is to identify baseline characteristics of long-term treatment responders and of those able to maintain their initial benefit from cognitive training.Participants were 120 non-demented, community-dwelling older adults who had participated in a cognitive training intervention. Tested predictors included both demographic and neurocognitive variables. Primary outcome variables were performance on measures of memory at one-year follow-up.Results of the signal detection analysis indicated that different neurocognitive performances predicted long-term effects of memory training and maintenance of initial treatment response according to different types of to-be-remembered material. Higher baseline scores on tests of associative memory, delayed verbal memory, attention, episodic memory, and younger age were found predictive of long-term response one year later. Higher associative memory scores and lower initial gains at the end of treatment (week 14) predicted successful maintenance of training gains at week 52.To derive long-term benefit from particular cognitive training programs, it appears necessary for older adults to have specific neurocognitive profiles. Further, inclusion of booster sessions to cognitive training programs may assist in maintenance of initial treatment gains.

  View details for DOI 10.1017/S1041610212002049

  View details for Web of Science ID 000315084700009

  View details for PubMedID 23237099

• Management of apathy in nursing homes using a teaching program for care staff: the STIM-EHPAD study INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY Leone, E., Deudon, A., Bauchet, M., Laye, M., Bordone, N., Lee, J., Piano, J., Friedman, L., David, R., Delva, F., Brocker, P., Yesavage, J., Robert, P. H. 2013; 28 (4): 383-392

  Abstract

  This study aimed to evaluate the effectiveness of a nursing home (NH) staff education to manage apathy in older individuals with a diagnosis of dementia.Sixteen NHs agreed to participate, and 230 demented apathetic residents were randomly assigned to the reference group (RG) or the intervention group (IG). IG received a month of weekly 4-h training. Qualitative evaluation was performed through interviews and questionnaires regarding work practices and knowledge about dementia. Quantitative evaluation was at baseline, at the end of the training program (week 4), and 3 months after the end of it with the use of the Neuropsychiatric Inventory (NPI), the Apathy Inventory, and two observation scales.In the qualitative evaluation, very few staff responded to the questionnaire. Concerning the difficulty that managing residents' behavioral symptoms presented, aggressiveness was ranked as the most difficult behavior to manage and apathy as the least difficult. In the quantitative evaluation, the results are as follows. NPI: the IG scores increased from baseline to week 4 more than the RG for symptoms belonging to the affective and the psychotic NPI item subgroup. Apathy Inventory: there was a significant decrease of the emotional blunting score dimension in the IG. Group Observation Scale: significant improvement was observed for the emotional blunting dimension in the IG only.Apathy is rarely identified as a problem in NH. Emotional blunting was the only dimension sensitive to change. Failure to improve residents' level of interest could be explained by the difficulties encountered in accessing information regarding the subjects' personal interests. But it remains possible to modify residents' emotional reactivity and staff's perceptions of residents' behaviors and emotions.

  View details for DOI 10.1002/gps.3836

  View details for Web of Science ID 000315958800008

  View details for PubMedID 22700526

• Memantine is Associated with Longer Survival than Donepezil in a Veterans Affairs Prescription Database, 1997 to 2008 JOURNAL OF ALZHEIMERS DISEASE Lazzeroni, L. C., Halbauer, J. D., Ashford, J. W., Noda, A., Hernandez, B., Azor, V., Hozack, N., Hasson, N., Henderson, V. W., Yesavage, J. A., Tinklenberg, J. R. 2013; 36 (4): 791-798

  Abstract

  Alzheimer's disease (AD) shortens life-expectancy, but the effects of pharmacological treatments for this disorder on mortality have not been studied. We compared two commonly prescribed medications, donepezil and memantine, with respect to the length of survival of veterans presumed to have AD. The Computerized Medical Records System at the Veterans Affairs Palo Alto Health Care System (VAPAHCS) was used to identify all patients prescribed these medications between 1997 and 2008. The VAPAHCS approved donepezil in 1997 and memantine in 2004. Kaplan-Meier and Cox regression analyses were used to test for chronological and drug-related associations with survival in 2,083 male veterans aged 55 years and older receiving prescriptions for donepezil, memantine, or both. Overall patient mortality decreased in the 2004 to 2008 era, compared with the 1997 to 2003 era, pre-memantine (HR: 0.75; 95% CI: 0.63, 0.89; p = 0.001). In analyses confined to the 2004 to 2008 era, patients prescribed memantine alone survived significantly longer (median survival 8.9 years) than those prescribed donepezil alone (HR: 2.24; 95% CI: 1.53, 3.28; p < 0.001) or both donepezil and memantine (HR: 1.83; 95% CI: 1.14, 2.94; p = 0.012). While this study has several limitations, these findings suggest that memantine treatment is associated with an increased life-expectancy relative to donepezil treatment. Additional research is needed to replicate these unexpected findings and identify potential mechanisms to explain this apparent association, to establish if the relationship applies to other cholinesterase inhibitors, and to discover whether the findings generalize to women and patient populations with characteristics different from those of the veterans in this study.

  View details for DOI 10.3233/JAD-130662

  View details for Web of Science ID 000322738000016

  View details for PubMedID 23703151

• Nocturia Compounds Nocturnal Wakefulness in Older Individuals with Insomnia JOURNAL OF CLINICAL SLEEP MEDICINE Zeitzer, J. M., Bliwise, D. L., Hernandez, B., Friedman, L., Yesavage, J. A. 2013; 9 (3): 259-262

  Abstract

  To determine the impact of nocturia on objective measures of sleep in older individuals with insomnia.The sleep and toileting patterns of a group of community-dwelling older men (n = 55, aged 64.3 ± 7.52 years) and women (n = 92, aged 62.5 ± 6.73 years) with insomnia were studied for two weeks using sleep logs and one week using actigraphy. The relationships between nocturia and various sleep parameters were analyzed with ANOVA and linear regression.More than half (54.2% ± 39.9%) of all log-reported nocturnal awakenings were associated with nocturia. A greater number of trips to the toilet was associated with worse log-reported restedness (p < 0.01) and sleep efficiency (p < 0.001), as well as increases in actigraph-derived measures of the number and length of nocturnal wake bouts (p < 0.001) and wake after sleep onset (p < 0.001). Actigraph-determined wake bouts were 11.5% ± 23.5% longer on nights on which there was a trip to the toilet and wake after sleep onset was 20.8% ± 33.0% longer during these nights.Nocturia is a common occurrence in older individuals with insomnia and is significantly associated with increased nocturnal wakefulness and decreased subjective restedness after sleep.

  View details for DOI 10.5664/jcsm.2492

  View details for Web of Science ID 000316209800010

  View details for PubMedID 23493881

• Modeling the effects of obstructive sleep apnea and hypertension in Vietnam veterans with PTSD SLEEP AND BREATHING Kinoshita, L. M., Yesavage, J. A., Noda, A., Jo, B., Hernandez, B., Taylor, J., Zeitzer, J. M., Friedman, L., Fairchild, J. K., Cheng, J., Kuschner, W., O'Hara, R., Holty, J. C., Scanlon, B. K. 2012; 16 (4): 1201-1209

  Abstract

  The present work aimed to extend models suggesting that obstructive sleep apnea (OSA) is associated with worse cognitive performance in community-dwelling older adults. We hypothesized that in addition to indices of OSA severity, hypertension is associated with worse cognitive performance in such adults.The PTSD Apnea Clinical Study recruited 120 community-dwelling, male veterans diagnosed with PTSD, ages 55 and older. The Rey Auditory Verbal Learning Test (RAVLT) and Color-Word Interference Test (CWIT) were measures of auditory verbal memory and executive function, respectively. Apnea-hypopnea index (AHI), minimum and mean pulse oximeter oxygen saturation (min SpO(2), mean SpO(2)) indicators were determined during standard overnight polysomnography. Multivariate linear regression and receiver operating characteristic (ROC) curve analyses were performed.In regression models, AHI (β = -4.099; p < 0.01) and hypertension (β = -4.500; p < 0.05) predicted RAVLT; hypertension alone (β = 9.146; p < 0.01) predicted CWIT. ROC analyses selected min SpO(2) cut-points of 85% for RAVLT (κ = 0.27; χ² = 8.23, p < 0.01) and 80% for CWIT (κ = 0.25; χ² = 12.65, p < 0.01). Min SpO(2) cut-points and hypertension were significant when added simultaneously in a regression model for RAVLT (min SpO(2), β = 4.452; p < 0.05; hypertension, β = -4.332; p < 0.05), and in separate models for CWIT (min SpO(2), β = -8.286; p < 0.05; hypertension, β = -8.993; p < 0.01).OSA severity and presence of self-reported hypertension are associated with poor auditory verbal memory and executive function in older adults.

  View details for DOI 10.1007/s11325-011-0632-8

  View details for Web of Science ID 000311301700038

  View details for PubMedID 22193972

• Pilot Expertise and Hippocampal Size: Associations with Longitudinal Flight Simulator Performance AVIATION SPACE AND ENVIRONMENTAL MEDICINE Adamson, M. M., Bayley, P. J., Scanlon, B. K., Farrell, M. E., Hernandez, B., Weiner, M. W., Yesavage, J. A., Taylor, J. L. 2012; 83 (9): 850-857

  Abstract

  Previous research suggests that the size of the hippocampus can vary in response to intensive training (e.g., during the acquisition of expert knowledge). However, the role of the hippocampus in maintenance of skilled performance is not well understood. The Stanford/Veterans Affairs Aviation MRI Study offers a unique opportunity to observe the interaction of brain structure and multiple levels of expertise on longitudinal flight simulator performance.The current study examined the relationship between hippocampal volume and three levels of aviation expertise, defined by pilot proficiency ratings issued by the U.S. Federal Aviation Administration (11). At 3 annual time points, 60 pilots who varied in their level of aviation expertise (ages ranging from 45 to 69 yr) were tested.At baseline, higher expertise was associated with better flight simulator performance, but not with hippocampal volume. Longitudinally, there was an Expertise x Hippocampal volume interaction, in the direction that a larger hippocampus was associated with better performance at higher levels of expertise.These results are consistent with the notion that expertise in a cognitively demanding domain involves the interplay of acquired knowledge ('mental schemas') and basic hippocampal-dependent processes.

  View details for DOI 10.3357/ASEM.3215.2012

  View details for Web of Science ID 000307919100002

  View details for PubMedID 22946348

• Decreased Daytime Motor Activity Associated With Apathy in Alzheimer Disease: An Actigraphic Study AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY David, R., Mulin, E., Friedman, L., Le Duff, F., Cygankiewicz, E., Deschaux, O., Garcia, R., Yesavage, J. A., Robert, P. H., Zeitzer, J. M. 2012; 20 (9): 806-814

  Abstract

  Across all stages of Alzheimer disease (AD), apathy is the most common neuropsychiatric symptom. Studies using the Neuropsychiatric Inventory (NPI) have found that apathy is present in up to 70% of individuals with Alzheimer disease. One of the main difficulties in assessing apathy and other neuropsychiatric symptoms is the absence of reliable, objective measures. Motor activity assessment using ambulatory actigraphy could provide an indirect, objective evaluation of apathy. The aim of our study was to assess the relationship between apathy and daytime motor activity in AD, using ambulatory actigraphy.One hundred seven AD outpatients wore a wrist actigraph (Motionlogger) during seven consecutive 24-hour periods to evaluate motor activity. Participants were divided into two subgroups according to their apathy subscores on the NPI: individuals with apathy (NPI-apathy subscores >4) and those without. Daytime mean motor activity scores were compared between the two subgroups.Individuals with AD who had symptoms of apathy (n = 43; age = 79 ± 4.7 years; Mini-Mental State Examination = 20.9 ± 4.8) had significantly lower daytime mean motor activity than AD patients without apathy (n = 64; age = 76.3 ± 7.7; Mini-Mental State Examination = 21.5 ± 4.7), while nighttime mean motor activity did not significantly differ between the two subgroups.Ambulatory actigraphy could be added to currently used questionnaires as a simple, objective technique for assessing apathy in the routine assessment of AD patients.

  View details for DOI 10.1097/JGP.0b013e31823038af

  View details for Web of Science ID 000308078500010

  View details for PubMedID 21997602

• Periodic leg movements in sleep in elderly patients with Parkinsonism and Alzheimer's disease EUROPEAN JOURNAL OF NEUROLOGY Bliwise, D. L., Trotti, L. M., Yesavage, J. A., Rye, D. B. 2012; 19 (6): 918-923

  Abstract

    Periodic leg movements in sleep (PLMS) are non-epileptiform, repetitive movements of the lower limbs that have been associated with apparent dopamine deficiency. We hypothesized that elderly patients with a disease characterized primarily by dopamine depletion (Parkinsonism) would have higher rates of PLMS than age-matched controls or a different neurodegenerative condition not primarily involving a hypodopaminergic state, Alzheimer's disease (AD).  We compared rates of PLMS derived from in-laboratory overnight polysomnography in patients with Parkinsonism (n = 79), AD (n = 28), and non-neurologically impaired, community-based controls (n = 187).  Patients with Parkinsonism not receiving levodopa had significantly higher rates of PLMS than did patients with Parkinsonism receiving levodopa as well as higher rates than seen in AD and controls. Other medications did not appear to exert the pronounced effect of levodopa on PLMS in this Parkinsonian patient population. The symptom of leg kicking was reported more frequently in Parkinsonism and was associated with higher rates of PLMS. Caregiver reported leg kicking was unrelated to PLMS in AD. Results are broadly compatible with a dopaminergic hypothesis for PLMS in Parkinsonism. The clinical significance of the negative findings in patients with AD requires further investigation.

  View details for DOI 10.1111/j.1468-1331.2012.03673.x

  View details for Web of Science ID 000303911600024

  View details for PubMedID 22340757

• Brief morning light treatment for sleep/wake disturbances in older memory-impaired individuals and their caregivers SLEEP MEDICINE Friedman, L., Spira, A. P., Hernandez, B., Mather, C., Sheikh, J., Ancoli-Israel, S., Yesavage, J. A., Zeitzer, J. M. 2012; 13 (5): 546-549

  Abstract

  Scheduled exposure to bright light (phototherapy) has been used, with varying degrees of success, to treat sleep disruption in older individuals. Most of these studies have been done in institutional settings and have used several hours of daily light exposure. Such a regimen in the home setting may be untenable, especially when the individual with the sleep disruption has memory impairment and is being cared for by a family member. As such, we examined the effectiveness of a "user-friendly" phototherapy protocol that would be readily usable in the home environment.We exposed a group of 54 older caregiver/care recipient dyads, in which the care recipient had memory impairment, to two weeks of morning bright light phototherapy. Dyads were exposed to either bright white (∼4200 lux) or dim red (∼90 lux) light for 30 min every day, starting within 30 min of rising. All subjects also received sleep hygiene therapy. Objective (actigraphy) and subjective measures of sleep and mood were obtained at baseline and at the end of the two weeks of phototherapy.In care recipients, actigraphy- and log-determined time in bed and total sleep time declined in the active condition (p<0.05, ANOVA); there was no corresponding change in subjective insomnia symptoms (p's>0.37, ANOVA). The decrease in the time in bed was associated with an earlier out of bed time in the morning (p<0.001, Pearson correlation). The decrease in the total sleep time was associated with a decrease in sleep efficiency (p<0.001, Pearson correlation) and an increase in wake after sleep onset (p<0.001, Pearson correlation). In caregivers, there were no differential changes in actigraphic measures of sleep (p's>0.05, ANOVA). Actigraphy-measured wake after sleep onset and sleep efficiency did, however, improve in both conditions, as did sleepiness, insomnia symptoms, and depressive symptomatology (p's<0.05, ANOVA).Exposure to this regimen of phototherapy diminished sleep in older individuals with memory impairments. Their caregivers, however, experienced an improvement in sleep and mood that appeared independent of the phototherapy and likely due to participation in this protocol or the sleep hygiene therapy.

  View details for DOI 10.1016/j.sleep.2011.11.013

  View details for Web of Science ID 000303346800016

  View details for PubMedID 22406033

• BDNF Polymorphism Predicts the Rate of Decline in Skilled Task Performance and Hippocampal Volume in Healthy Individuals 64th Annual Meeting of the American-Academy-of-Neurology (AAN) Das, D., Sanchez, M., Taylor, J., Noda, A., Yesavage, J., Salehi, A. LIPPINCOTT WILLIAMS & WILKINS. 2012

  View details for Web of Science ID 000303204802378

• Sleep-Disordered Breathing in Vietnam Veterans with Posttraumatic Stress Disorder AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY Yesavage, J. A., Kinoshita, L. M., Kimball, T., Zeitzer, J., Friedman, L., Noda, A., David, R., Hernandez, B., Lee, T., Cheng, J., O'Hara, R. 2012; 20 (3): 199-204

  Abstract

  : To study the prevalence of sleep-disordered breathing (SDB) in Vietnam- era veterans.: This was an observational study of Vietnam-era veterans using unattended, overnight polysomnography, cognitive testing, and genetic measures.: A sample of 105 Vietnam-era veterans with posttraumatic stress disorder: 69% had an Apnea Hypopnea Index >10. Their mean body mass index was 31, "obese" by Centers for Disease Control and Prevention criteria, and body mass index was significantly associated with Apnea Hypopnea Index (Spearman r = 0.41, N = 97, p < 0.0001). No significant effects of sleep-disordered breathing or apolipoprotein status were found on an extensive battery of cognitive tests.: There is a relatively high prevalence of SDB in these patients which raises the question of to what degree excess cognitive loss in older PTSD patients may be due to a high prevalence of SDB.

  View details for DOI 10.1097/JGP.0b013e3181e446ea

  View details for Web of Science ID 000300642300002

  View details for PubMedID 20808112

• Phenotyping Apathy in Individuals With Alzheimer Disease Using Functional Principal Component Analysis. The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry Zeitzer, J. M., David, R., Friedman, L., Mulin, E., Garcia, R., Wang, J., Yesavage, J. A., Robert, P. H., Shannon, W. 2012

  Abstract

  OBJECTIVES:: To determine if there is a specific pattern of gross motor activity associated with apathy in individuals with Alzheimer disease (AD). DESIGN:: Examination of ad libitum 24-hour ambulatory gross motor activity patterns. SETTING:: Community-dwelling, outpatient. PARTICIPANTS:: Ninety-two individuals with AD, 35 of whom had apathy. MEASUREMENTS:: Wrist actigraphy data were collected and examined using functional principal component analysis (fPCA). RESULTS:: Individuals with apathy have a different pattern of gross motor activity than those without apathy (first fPCA component, p <0.0001, t = 5.73, df = 90, t test) such that there is a pronounced decline in early afternoon activity in those with apathy. This change in activity is independent of depression (p = 0.68, F[1, 89] = 0.05, analysis of variance). The decline in activity is consistent with an increase in napping. Those with apathy also have an early wake and bedtime (second fPCA component, t = 2.53, df = 90, p <0.05, t test). CONCLUSIONS:: There is a signature activity pattern in individuals with apathy and AD that is distinct from those without apathy and those with depression. Actigraphy may be a useful adjunctive measurement in the clinical diagnosis of apathy in the context of AD.

  View details for DOI 10.1097/JGP.0b013e318248779d

  View details for PubMedID 22367164

  View details for PubMedCentralID PMC3368995

• Delineating a Retesting Zone Using Receiver Operating Characteristic Analysis on Serial QuantiFERON Tuberculosis Test Results in US Healthcare Workers. Pulmonary medicine Thanassi, W., Noda, A., Hernandez, B., Newell, J., Terpeluk, P., Marder, D., Yesavage, J. A. 2012; 2012: 291294-?

  Abstract

  Objective. To find a statistically significant separation point for the QuantiFERON Gold In-Tube (QFT) interferon gamma release assay that could define an optimal "retesting zone" for use in serially tested low-risk populations who have test "reversions" from initially positive to subsequently negative results. Method. Using receiver operating characteristic analysis (ROC) to analyze retrospective data collected from 3 major hospitals, we searched for predictors of reversion until statistically significant separation points were revealed. A confirmatory regression analysis was performed on an additional sample. Results. In 575 initially positive US healthcare workers (HCWs), 300 (52.2%) had reversions, while 275 (47.8%) had two sequential positive tests. The most statistically significant (Kappa = 0.48, chi-square = 131.0, P < 0.001) separation point identified by the ROC for predicting reversion was the tuberculosis antigen minus-nil (TBag-nil) value at 1.11 International Units per milliliter (IU/mL). The second separation point was found at TBag-nil at 0.72 IU/mL (Kappa = 0.16, chi-square = 8.2, P < 0.01). The model was validated by the regression analysis of 287 HCWs. Conclusion. Reversion likelihood increases as the TBag-nil approaches the manufacturer's cut-point of 0.35 IU/mL. The most statistically significant separation point between those who test repeatedly positive and those who revert is 1.11 IU/mL. Clinicians should retest low-risk individuals with initial QFT results < 1.11 IU/mL.

  View details for DOI 10.1155/2012/291294

  View details for PubMedID 23326660

  View details for PubMedCentralID PMC3544373

• BDNF polymorphism predicts the rate of decline in skilled task performance and hippocampal volume in healthy individuals TRANSLATIONAL PSYCHIATRY Sanchez, M. M., Das, D., Taylor, J. L., Noda, A., Yesavage, J. A., Salehi, A. 2011; 1

  Abstract

  Numerous studies have indicated a link between the presence of polymorphism in brain-derived neurotrophic factor (BDNF) and cognitive and affective disorders. However, only a few have studied these effects longitudinally along with structural changes in the brain. This study was carried out to investigate whether valine-to-methionine substitution at position 66 (val66met) of pro-BDNF could be linked to alterations in the rate of decline in skilled task performance and structural changes in hippocampal volume. Participants consisted of 144 healthy Caucasian pilots (aged 40-69 years) who completed a minimum of 3 consecutive annual visits. Standardized flight simulator score (SFSS) was measured as a reliable and quantifiable indicator for skilled task performance. In addition, a subset of these individuals was assessed for hippocampal volume alterations using magnetic resonance imaging. We found that val66met substitution in BDNF correlated longitudinally with the rate of decline in SFSS. Structurally, age-dependent hippocampal volume changes were also significantly altered by this substitution. Our study suggests that val66met polymorphism in BDNF can be linked to the rate of decline in skilled task performance. Furthermore, this polymorphism could be used as a predictor of the effects of age on the structure of the hippocampus in healthy individuals. Such results have implications for understanding possible disabilities in older adults performing skilled tasks who are at a higher risk for cognitive and affective disorders.Translational Psychiatry (2011) 1, e51; doi:10.1038/tp.2011.47; published online 25 October 2011.

  View details for DOI 10.1038/tp.2011.47

  View details for Web of Science ID 000306216300008

  View details for PubMedID 22833197

• Effectiveness of evening phototherapy for insomnia is reduced by bright daytime light exposure SLEEP MEDICINE Zeitzer, J. M., Friedman, L., Yesavage, J. A. 2011; 12 (8): 805-807

  Abstract

  To examine the effect of ambulatory daytime light exposure on phase delays and on the advances produced by timed exposure to bright evening or morning light.As a subset of a larger study, 32 older (63.0 ± 6.43 years) adults with primary insomnia were randomized to an at-home, single-blind, 12-week, parallel-group study entailing daily exposure to 45 min of scheduled evening or morning bright (∼4000 lux) light. Light exposure patterns during the baseline and the last week of treatment were monitored using actigraphs with built-in illuminance detectors. Circadian phase was determined through analysis of in-laboratory collected plasma melatonin.Less daytime light exposure during the last week of treatment was significantly associated with larger phase delays in response to evening light (r's>0.78). Less daytime light exposure during the last week of treatment was also associated with a significant delay in wake time (r's>-0.75). There were no such relationships between light exposure history and phase advances in response to morning light.Greater light exposure during the daytime may decrease the ability of evening light, but not morning light, exposure to engender meaningful changes of circadian phase.

  View details for DOI 10.1016/j.sleep.2011.02.005

  View details for Web of Science ID 000295764800013

  View details for PubMedID 21855408

• The Roles of COMT val158met Status and Aviation Expertise in Flight Simulator Performance and Cognitive Ability BEHAVIOR GENETICS Kennedy, Q., Taylor, J. L., Noda, A., Adamson, M., Murphy, G. M., Zeitzer, J. M., Yesavage, J. A. 2011; 41 (5): 700-708

  Abstract

  The polymorphic variation in the val158met position of the catechol-O-methyltransferase (COMT) gene is associated with differences in executive performance, processing speed, and attention. The purpose of this study is: (1) replicate previous COMT val158met findings on cognitive performance; (2) determine whether COMT val158met effects extend to a real-world task, aircraft navigation performance in a flight simulator; and (3) determine if aviation expertise moderates any effect of COMT val158met status on flight simulator performance. One hundred seventy two pilots aged 41-69 years, who varied in level of aviation training and experience, completed flight simulator, cognitive, and genetic assessments. Results indicate that although no COMT effect was found for an overall measure of flight performance, a positive effect of the met allele was detected for two aspects of cognitive ability: executive functioning and working memory performance. Pilots with the met/met genotype benefited more from increased levels of expertise than other participants on a traffic avoidance measure, which is a component of flight simulator performance. These preliminary results indicate that COMT val158met polymorphic variation can affect a real-world task.

  View details for DOI 10.1007/s10519-010-9436-z

  View details for Web of Science ID 000294297200008

  View details for PubMedID 21193954

• Initial Cognitive Performance Predicts Longitudinal Aviator Performance JOURNALS OF GERONTOLOGY SERIES B-PSYCHOLOGICAL SCIENCES AND SOCIAL SCIENCES Yesavage, J. A., Jo, B., Adamson, M. M., Kennedy, Q., Noda, A., Hernandez, B., Zeitzer, J. M., Friedman, L. F., Fairchild, K., Scanlon, B. K., Murphy, G. M., Taylor, J. L. 2011; 66 (4): 444-453

  Abstract

  The goal of the study was to improve prediction of longitudinal flight simulator performance by studying cognitive factors that may moderate the influence of chronological age.We examined age-related change in aviation performance in aircraft pilots in relation to baseline cognitive ability measures and aviation expertise. Participants were aircraft pilots (N = 276) aged 40-77.9. Flight simulator performance and cognition were tested yearly; there were an average of 4.3 (± 2.7; range 1-13) data points per participant. Each participant was classified into one of the three levels of aviation expertise based on Federal Aviation Administration pilot proficiency ratings: least, moderate, or high expertise.Addition of measures of cognitive processing speed and executive function to a model of age-related change in aviation performance significantly improved the model. Processing speed and executive function performance interacted such that the slowest rate of decline in flight simulator performance was found in aviators with the highest scores on tests of these abilities. Expertise was beneficial to pilots across the age range studied; however, expertise did not show evidence of reducing the effect of age.These data suggest that longitudinal performance on an important real-world activity can be predicted by initial assessment of relevant cognitive abilities.

  View details for DOI 10.1093/geronb/gbr031

  View details for Web of Science ID 000293251900007

  View details for PubMedID 21586627

• Circadian Clock Gene Polymorphisms and Sleep-Wake Disturbance in Alzheimer Disease AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY Yesavage, J. A., Noda, A., Hernandez, B., Friedman, L., Cheng, J. J., Tinklenberg, J. R., Hallmayer, J., O'Hara, R., David, R., Robert, P., Landsverk, E., Zeitzer, J. M. 2011; 19 (7): 635-643

  Abstract

  One of the hypothesized causes of the breakdown in sleep-wake consolidation often occurring in individuals with Alzheimer disease (AD) is the dysfunction of the circadian clock. The goal of this study is to report indices of sleep-wake function collected from individuals with AD in relation to relevant polymorphisms in circadian clock-related genes.One week of ad libitum ambulatory sleep data collection.At-home collection of sleep data and in-laboratory questionnaire.Two cohorts of AD participants. Cohort 1 (N = 124): individuals with probable AD recruited from the Stanford/Veterans Affairs, National Institute on Aging Alzheimer's Disease Core Center (N = 81), and the Memory Disorders Clinic at the University of Nice School of Medicine (N = 43). Cohort 2 (N = 176): individuals with probable AD derived from the Alzheimer's Disease Neuroimaging Initiative data set.Determination of sleep-wake state was obtained by wrist actigraphy data for 7 days in Cohort 1 and by the Neuropsychiatric Inventory questionnaire for Cohort 2. Both cohorts were genotyped by using an Illumina Beadstation (Illumina, San Diego, CA), and 122 circadian-related single-nucleotide polymorphisms (SNPs) were examined. In Cohort 1, an additional polymorphism (variable-number tandem repeat in per3) was also determined.Adjusting for multiple tests, none of the candidate gene SNPs were significantly associated with the amount of wake time after sleep onset (WASO), a marker of sleep consolidation. Although the study was powered sufficiently to identify moderate-sized correlations, we found no relationships likely to be of clinical relevance.It is unlikely that a relationship with a clinically meaningful correlation exists between the circadian rhythm-associated SNPs and WASO in individuals with AD.

  View details for DOI 10.1097/JGP.0b013e31820d92b2

  View details for Web of Science ID 000292031900005

  View details for PubMedID 21709609

• Influences of APOE epsilon 4 and Expertise on Performance of Older Pilots PSYCHOLOGY AND AGING Taylor, J. L., Kennedy, Q., Adamson, M. M., Lazzeroni, L. C., Noda, A., Murphy, G. M., Yesavage, J. A. 2011; 26 (2): 480-487

  Abstract

  Little is known about how APOE ε4-related differences in cognitive performance translate to real-life performance, where training and experience may help to sustain performance. We investigated the influences of APOE ε4 status, expertise (FAA pilot proficiency ratings), and their interaction on longitudinal flight simulator performance. Over a 2-year period, 139 pilots aged 42-69 years were tested annually. APOE ε4 carriers had lower memory performance than noncarriers (p = .019). APOE interacted with Expertise (p = .036), such that the beneficial influence of expertise (p = .013) on longitudinal flight simulator performance was more pronounced for ε4 carriers. Results suggest that relevant training and activity may help sustain middle-aged and older adults' real-world performance, especially among APOE ε4 carriers.

  View details for DOI 10.1037/a0021697

  View details for Web of Science ID 000291668800026

  View details for PubMedID 21668123

• Faster REM sleep EEG and worse restedness in older insomniacs with HLA DQB1*0602 PSYCHIATRY RESEARCH Zeitzer, J. M., Fisicaro, R. A., Grove, M. E., Mignot, E., Yesavage, J. A., Friedman, L. 2011; 187 (3): 397-400

  Abstract

  HLA DQB1*0602 is found in most individuals with hypocretin-deficient narcolepsy, a disorder characterized by a severe disruption of sleep and wake. Population studies indicate that DQB1*0602 may also be associated with normal phenotypic variation of rapid eye movement (REM) sleep. Disruption of REM sleep has been linked to specific symptoms of insomnia. We here examine the relationship of sleep and DQB1*0602 in older individuals (n=46) with primary insomnia, using objective (polysomnography, wrist actigraphy) and subjective (logs, scales) measures. DQB1*0602 positivity was similarly distributed in the older individuals with insomnia (24%) as in the general population (25%). Most sleep variables were statistically indistinguishable between DQB1*0602 positive and negative subjects except that those with the allele reported that they were significantly less well rested than those without it. When sleep efficiencies were lower than 70%, DQB1*0602 positive subjects reported being less well rested at the same sleep efficiency than those without the allele. Examination of EEG during REM sleep also revealed that DQB1*0602 positive subjects had EEG shifted towards faster frequencies compared with negative subjects. Thus, DQB1*0602 positivity is associated with both a shift in EEG power spectrum to faster frequencies during REM sleep and a diminution of restedness given the same sleep quantity.

  View details for DOI 10.1016/j.psychres.2011.01.007

  View details for Web of Science ID 000290506500014

  View details for PubMedID 21292329

• Lack of Association Between COMT Polymorphisms and Apathy in Alzheimer's Disease JOURNAL OF ALZHEIMERS DISEASE David, R., Friedman, L., Mulin, E., Noda, A., Le Duff, F., Kennedy, Q., Garcia, R., Robert, P. H., Yesavage, J. A., Zeitzer, J. M. 2011; 27 (1): 155-161

  Abstract

  We tested the hypothesis that single nucleotide polymorphisms (SNPs) in catechol-O-methyltransferase (COMT) are associated with apathy in individuals with Alzheimer's disease (AD). We analyzed a cohort of 105 Caucasian individuals with AD (age = 79.3 ± 7.03 years; MMSE = 20.2 ± 4.4) according to the presence of apathy, as defined either by the Neuropsychiatric Inventory or the Apathy Inventory. Polymorphisms in seventeen SNPs in COMT were examined. A replication cohort consisting of 176 Caucasian AD subjects in the ADNI database was also analyzed. None of the candidate gene SNPs were significantly associated with the presence of apathy in either cohort. We did not find any SNPs in COMT that were consistently associated with apathy in individuals with AD.

  View details for DOI 10.3233/JAD-2011-110491

  View details for Web of Science ID 000296570400014

  View details for PubMedID 21785189

• Relationship between Apathy and Sleep Disturbance in Mild and Moderate Alzheimer's Disease: An Actigraphic Study JOURNAL OF ALZHEIMERS DISEASE Mulin, E., Zeitzer, J. M., Friedman, L., Le Duff, F., Yesavage, J., Robert, P. H., David, R. 2011; 25 (1): 85-91

  Abstract

  Apathy is the most frequently reported neuropsychiatric symptom across all stages of Alzheimer's disease (AD). Both apathy and sleep disorders are known to have independent negative effects on the quality of life in individuals with AD. The aim of this study was to assess the relationship between apathy and sleep/wake patterns in individuals with AD using ambulatory actigraphy. One hundred and three non-institutionalized individuals with AD wore a wrist actigraph continuously over seven consecutive 24-h periods. Apathy was assessed using the Neuropsychiatric Inventory. Daytime mean motor activity (dMMA) was calculated from daytime wrist actigraphy data. Actigraphic parameters of sleep included total sleep time (TST), wake after sleep onset (WASO), time in bed (TIB), WASO normalized by TIB, sleep latency, and nighttime mean motor activity (nMMA). Among the 103 individuals with AD (aged 76.9 ± 7.2 years; MMSE = 21.4 ± 4.3), those with apathy had significantly lower dMMA, higher WASO (both raw and normalized), and spent more time in bed during the night than those without apathy. Sleep latency, nMMA and TST did not differ significantly between the two subgroups. To our knowledge, this study is the first to identify a relationship between apathy and sleep disturbance in those with mild or moderate AD: apathy was associated with increased TIB during the night and more WASO. These results suggest that AD patients with apathy have less consolidated nocturnal sleep than those without apathy.

  View details for DOI 10.3233/JAD-2011-101701

  View details for Web of Science ID 000293377700009

  View details for PubMedID 21335662

• MR Spectroscopy for Assessment of Memantine Treatment in Mild to Moderate Alzheimer Dementia JOURNAL OF ALZHEIMERS DISEASE Ashford, J. W., Adamson, M., Beale, T., La, D., Hernandez, B., Noda, A., Rosen, A., O'Hara, R., Fairchild, J. K., Spielman, D., Yesavage, J. A. 2011; 26: 331-336

  Abstract

  Magnetic Resonance Spectroscopy (MRS) may provide a precise and reliable assessment of the extent and severity of neural tissue loss caused by various diseases. In particular, the N-Acetyl Aspartate (NAA) and Creatine (Cr) ratio has been found to be an indicator of the degree of neuronal loss in Alzheimer's disease (AD). Memantine is thought to benefit the AD brain by stabilizing the NMDA receptors on neurons in turn reducing excitotoxicity. Despite its effectiveness in treating moderate to severe AD, memantine has not had similar success in the treatment of mildly demented AD patients. The objective of this study was to test whether memantine would slow or prevent the loss of neurons in mild to moderate AD patients.A double-blind placebo-controlled study was designed to measure the effect of a year-long course of memantine in patients with a probable AD diagnosis with mild to moderate dementia. The primary outcome measure was stipulated to be change in MRS NAA/Cr ratio in inferior parietal cortex in memantine relative to the placebo treatment condition. The secondary outcome measures were changes in cognitive and function scale scores.This pilot study failed to demonstrate a benefit of memantine on the primary outcome measure, the inferior parietal NAA/Cr ratio, or the secondary outcome measures.More studies are needed to determine the effect of memantine on regions of the brain significantly affected by AD pathology.

  View details for DOI 10.3233/JAD-2011-0021

  View details for Web of Science ID 000297842800025

  View details for PubMedID 21971472

• Nicotine Deprivation and Pilot Performance During Simulated Flight AVIATION SPACE AND ENVIRONMENTAL MEDICINE Mumenthaler, M. S., Benowitz, N. L., Taylor, J. L., Friedman, L., Noda, A., Yesavage, J. A. 2010; 81 (7): 660-664

  Abstract

  Most airlines enforce no-smoking policies, potentially causing flight performance decrements in pilots who are smokers. We tested the hypotheses that nicotine withdrawal affects aircraft pilot performance within 12 h of smoking cessation and that chewing nicotine gum leads to significant relief of these withdrawal effects.There were 29 pilots, regular smokers, who were tested in a Frasca 141 flight simulator on two 13-h test days, each including three 75-min flights (0 hr, 6 hr, 12 hr) in a randomized, controlled trial. On the first day (baseline), all pilots smoked one cigarette per hour. On the second day, pilots were randomly assigned to one of four groups: (1) nicotine cigarettes; (2) nicotine gum; (3) placebo gum; (4) no cigarettes/no gum. Flight Summary Scores (FSS) were compared between groups with repeated measures ANOVAs.No statistically significant differences in overall simulator flight performance were revealed between pilots who smoked cigarettes and pilots who were not allowed to smoke cigarettes or chew nicotine gum, but there was a trend for pilots who were not allowed to smoke to perform worse. However, pilots who chewed placebo gum performed significantly worse during the 6-h (FSS = -0.03) as well as during the 12-h flight (FSS = -0.08) than pilots who chewed nicotine gum (FSS = 0.15 / 0.30, respectively).Results suggest that nicotine withdrawal effects can impair aircraft pilot performance within 12 h of smoking cessation and that during smoking abstinence chewing one stick of 4-mg nicotine gum per hour may lead to significantly better overall flight performance compared to chewing placebo gum.

  View details for DOI 10.3357/ASEM.2701.2010

  View details for Web of Science ID 000279187200006

  View details for PubMedID 20597245

• The impact of brain size on pilot performance varies with aviation training and years of education JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY Adamson, M. M., Samarina, V., Xu XiangYan, X. Y., Huynh, V., Kennedy, Q., Weiner, M., Yesavage, J., Taylor, J. L. 2010; 16 (3): 412-423

  Abstract

  Previous studies have consistently reported age-related changes in cognitive abilities and brain structure. Previous studies also suggest compensatory roles for specialized training, skill, and years of education in the age-related decline of cognitive function. The Stanford/VA Aviation Study examines the influence of specialized training and skill level (expertise) on age-related changes in cognition and brain structure. This preliminary report examines the effect of aviation expertise, years of education, age, and brain size on flight simulator performance in pilots aged 45-68 years. Fifty-one pilots were studied with structural magnetic resonance imaging, flight simulator, and processing speed tasks. There were significant main effects of age (p < .01) and expertise (p < .01), but not of whole brain size (p > .1) or education (p > .1), on flight simulator performance. However, even though age and brain size were correlated (r = -0.41), age differences in flight simulator performance were not explained by brain size. Both aviation expertise and education were involved in an interaction with brain size in predicting flight simulator performance (p < .05). These results point to the importance of examining measures of expertise and their interactions to assess age-related cognitive changes.

  View details for DOI 10.1017/S1355617710000111

  View details for Web of Science ID 000277579000002

  View details for PubMedID 20193103

• Age and Expertise Effects in Aviation Decision Making and Flight Control in a Flight Simulator AVIATION SPACE AND ENVIRONMENTAL MEDICINE Kennedy, Q., Taylor, J. L., Reade, G., Yesavage, J. A. 2010; 81 (5): 489-497

  Abstract

  Age (due to declines in cognitive abilities necessary for navigation) and level of aviation expertise are two factors that may affect aviation performance and decision making under adverse weather conditions. We examined the roles of age, expertise, and their relationship on aviation decision making and flight control performance during a flight simulator task.Seventy-two IFR-rated general aviators, aged 19-79 yr, made multiple approach, holding pattern entry, and landing decisions while navigating under Instrument Flight Rules weather conditions. Over three trials in which the fog level varied, subjects decided whether or not to land the aircraft. They also completed two holding pattern entries. Subjects' flight control during approaches and holding patterns was measured.Older pilots (41+ yr) were more likely than younger pilots to land when visibility was inadequate (older pilots' mean false alarm rate: 0.44 vs 0.25). They also showed less precise flight control for components of the approach, performing 0.16 SD below mean approach scores. Expertise attenuated an age-related decline in flight control during holding patterns: older IFR/CFI performed 0.73 SD below mean score; younger IFR/CFI, younger CFII/ATP, older CFII/ATP: 0.32, 0.26, 0.03 SD above mean score. Additionally, pilots with faster processing speed (by median split) had a higher mean landing decision false alarm rate (0.42 vs 0.28), yet performed 0.14 SD above the mean approach control score.Results have implications regarding specialized training for older pilots and for understanding processes involved in older adults' real world decision making and performance.

  View details for DOI 10.3357/ASEM.2684.2010

  View details for Web of Science ID 000277133500006

  View details for PubMedID 20464816

• Sleep and physical functioning in family caregivers of older adults with memory impairment INTERNATIONAL PSYCHOGERIATRICS Spira, A. P., Friedman, L., Beaudreau, S. A., Ancoli-Israel, S., Hernandez, B., Sheikh, J., Yesavage, J. 2010; 22 (2): 306-311

  Abstract

  Sleep disturbance is common in caregivers of older adults with memory disorders. Little is known, however, about the implications of caregivers' poor sleep with regard to their physical functioning.In this cross-sectional study, we investigated the association between objectively measured sleep and self-reported physical functioning in 45 caregivers (mean age = 68.6 years) who completed the Beck Depression Inventory-II, the Medical Outcomes Study SF-36, and the Mini-mental State Examination, and wore an actigraph for at least three days. Our primary predictors were actigraphic sleep parameters, and our outcome was the SF-36 Physical Functioning subscale.In multivariate-adjusted linear regression analyses, each 30-minute increase in caregivers' total sleep time was associated with a 2.2-point improvement in their Physical Functioning subscale scores (unstandardized regression coefficient (B) = 2.2, 95% confidence interval (CI) 1.0-3.4, p = 0.001). In addition, each 10-minute increase in time awake after initial sleep onset was associated with a 0.5-point decrease on the Physical Functioning subscale, although this was not statistically significant (B = -0.5, 95% CI -1.1, 0.1, p = 0.09).Our findings suggest that shorter sleep duration is associated with worse self-reported physical functioning in caregivers. Longitudinal studies are needed to determine whether poor sleep predicts functional decline in caregivers.

  View details for DOI 10.1017/S1041610209991153

  View details for Web of Science ID 000275132800016

  View details for PubMedID 19943990

• Non-pharmacologic management of sleep disturbance in Alzheimer's disease JOURNAL OF NUTRITION HEALTH & AGING David, R., Zeitzer, J., Friedman, L., Noda, A., O'Hara, R., Robert, P., Yesavage, J. A. 2010; 14 (3): 203-206

  Abstract

  Sleep and wake in Alzheimer's disease (AD) are often fragmented as manifested by bouts of wakefulness at night and napping during the day. Management of sleep disturbances in AD is important because of their negative impact on both patients and caregivers. Pharmacological treatments, mainly sedative-hypnotics and antipsychotics, are often used but can be associated with significant adverse effects. Non-pharmacological treatments represent a beneficial alternative approach to the management of sleep disturbances in AD since they are associated with fewer adverse effects and their efficacy can be sustained after treatment has been completed. The aim of this article is to review non-pharmacological treatments, such as sleep hygiene, sleep restriction therapy (SRT), cognitive behavioral therapy (CBT), light therapy, and continuous positive airway pressure (CPAP), for the management of sleep/wake disturbances in AD.

  View details for DOI 10.1007/s12603-010-0050-9

  View details for Web of Science ID 000276527000006

  View details for PubMedID 20191254

• Increasing the Ranks of Academic Researchers in Mental Health: A Multisite Approach to Postdoctoral Fellowship Training ACADEMIC MEDICINE O'Hara, R., Cassidy-Eagle, E. L., Beaudreau, S. A., Eyler, L. T., Gray, H. L., Giese-Davis, J., Hubbard, J., Yesavage, J. A. 2010; 85 (1): 41-47

  Abstract

  This report highlights the use of multisite training for psychiatry and psychology postdoctoral fellows developing careers in academic clinical research in the field of mental health. The objective is to describe a model of training for young investigators to establish independent academic clinical research careers, including (1) program structure and eligibility, (2) program goals and development of a multisite curriculum, (3) use of technology for implementing the program across multiple sites, and (4) advantages and challenges of this multisite approach. In 2000, in collaboration with the Veterans Affairs (VA) Mental Illness Research, Education and Clinical Centers (MIRECCs), the VA Office of Academic Affiliations launched the Special Fellowship Program in Advanced Psychiatry and Psychology. Each of the 10 currently participating VA sites across the United States is affiliated with a MIRECC and an academic medical institution. In the first five years of this fellowship program, 83 fellows (34 psychiatrists and 49 psychologists) have participated. The success of this multisite approach is evidenced by the 58 fellows who have already graduated from the program: 70% have entered academic clinical research positions, and over 25 have obtained independent extramural grant support from the VA or the National Institutes of Health. Multisite training results in a greater transfer of knowledge and capitalizes on the nationwide availability of experts, creating unique networking and learning opportunities for trainees. The VA's multisite fellowship program plays a valuable role in preparing substantial numbers of psychiatry and psychology trainees for a range of academic clinical research and leadership positions in the field of mental health.

  View details for DOI 10.1097/ACM.0b013e3181c47c51

  View details for Web of Science ID 000276131300015

  View details for PubMedID 20042819

• Neuroprotective natural antibodies to assemblies of amyloidogenic peptides decrease with normal aging and advancing Alzheimer's disease PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Britschgi, M., Olin, C. E., Johns, H. T., Takeda-Uchimura, Y., LeMieux, M. C., Rufibach, K., Rajadas, J., Zhang, H., Tomooka, B., Robinson, W. H., Clark, C. M., Fagan, A. M., Galasko, D. R., Holtzman, D. M., Jutel, M., Kaye, J. A., Lemere, C. A., Leszek, J., Li, G., Peskind, E. R., Quinn, J. F., Yesavage, J. A., Ghiso, J. A., Wyss-Coray, T. 2009; 106 (29): 12145-12150

  Abstract

  A number of distinct beta-amyloid (Abeta) variants or multimers have been implicated in Alzheimer's disease (AD), and antibodies recognizing such peptides are in clinical trials. Humans have natural Abeta-specific antibodies, but their diversity, abundance, and function in the general population remain largely unknown. Here, we demonstrate with peptide microarrays the presence of natural antibodies against known toxic Abeta and amyloidogenic non-Abeta species in plasma samples and cerebrospinal fluid of AD patients and healthy controls aged 21-89 years. Antibody reactivity was most prominent against oligomeric assemblies of Abeta and pyroglutamate or oxidized residues, and IgGs specific for oligomeric preparations of Abeta1-42 in particular declined with age and advancing AD. Most individuals showed unexpected antibody reactivities against peptides unique to autosomal dominant forms of dementia (mutant Abeta, ABri, ADan) and IgGs isolated from plasma of AD patients or healthy controls protected primary neurons from Abeta toxicity. Aged vervets showed similar patterns of plasma IgG antibodies against amyloid peptides, and after immunization with Abeta the monkeys developed high titers not only against Abeta peptides but also against ABri and ADan peptides. Our findings support the concept of conformation-specific, cross-reactive antibodies that may protect against amyloidogenic toxic peptides. If a therapeutic benefit of Abeta antibodies can be confirmed in AD patients, stimulating the production of such neuroprotective antibodies or passively administering them to the elderly population may provide a preventive measure toward AD.

  View details for DOI 10.1073/pnas.0904866106

  View details for Web of Science ID 000268178400059

  View details for PubMedID 19581601

• Gene expression profile of the PDAPP mouse model for Alzheimer's disease with and without Apolipoprotein E NEUROBIOLOGY OF AGING Selwood, S. P., Parvathy, S., Cordell, B., Ryan, H. S., Oshidari, F., Vincent, V., Yesavage, J., Lazzeroni, L. C., Murphy, G. M. 2009; 30 (4): 574-590

  Abstract

  The APOE epsilon 4 allele is a strong risk factor for Alzheimer's disease (AD). However, the molecular basis for this effect remains unclear. We examined expression of approximately 12,000 genes and expressed sequence tags in the hippocampus and cortex of PDAPP (APP(V717)) mice modeling AD that show extensive amyloid beta (A beta) deposition, and in PDAPP mice lacking murine APOE expression, which show marked attenuation of A beta deposition in the brain. Wild type and APOE knockout animals were also examined. Expression levels were determined at the initial stage of A beta deposition, as well as in older animals showing extensive neuropathological changes. Fifty-four transcripts were identified using our statistical analysis as differentially regulated between the PDAPP and PDAPP/APOE ko mice, whereas 31 transcripts were classified as differentially regulated among PDAPP mice and WT animals, and seven transcripts were identified as regulated between the PDAPP/APOE ko animals and the APOE ko animals. Interestingly, many of the differentially regulated genes we detected can be related to biological processes previously shown to be important in AD pathophysiology, including inflammation, calcium homeostasis, cholesterol transport and uptake, kinases and phosphatases involved in tau phosphorylation and dephosphorylation, mitochondrial energy metabolism, protein degradation, neuronal growth, endoplasmic reticulum (ER) stress related proteins, antioxidant activity, cytoskeletal organization, and presenilin binding proteins. Regulated genes also included some not directly associated with AD in the past but likely to be involved in known AD pathophysiologic mechanisms, and others that may represent completely novel factors in the pathogenesis of AD. These results provide a global molecular profile of hippocampal and cortical gene expression during the initial and intermediate stages Abeta deposition, and the effects of APOE deletion on this process.

  View details for DOI 10.1016/j.neurobiolaging.2007.08.006

  View details for Web of Science ID 000264579500013

  View details for PubMedID 17904698

• HLA DQB1*0602 IS ASSOCIATED WITH SLEEP PERCEPTION IN OLDER INDIVIDUALS WITH INSOMNIA 23rd Annual Meeting of the Associated-Professional-Sleep-Societies (APSS) Zeitzer, J., Grove, M. E., Mignot, E., Yesavage, J. A., Friedman, L. AMER ACAD SLEEP MEDICINE. 2009: A262–A262

  View details for Web of Science ID 000265542001152

• Clinical and Psychometric Validation of the Geriatric Depression Scale (GDS) for Portuguese Elders CLINICAL GERONTOLOGIST Pocinho, M. T., Farate, C., Dias, C. A., Lee, T. T., Yesavage, J. A. 2009; 32 (2): 223-236

  View details for DOI 10.1080/07317110802678680

  View details for Web of Science ID 000283865400008

• Neuropsychiatric diagnosis and management of chronic sequelae of war-related mild to moderate traumatic brain injury JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT Halbauer, J. D., Ashford, J. W., Zeitzer, J. M., Adamson, M. M., Lew, H. L., Yesavage, J. A. 2009; 46 (6): 757-795

  Abstract

  Soldiers with a traumatic brain injury (TBI) present with an array of neuropsychiatric symptoms that can be grouped into nosological clusters: (1) cognitive dysfunctions: difficulties in memory, attention, language, visuospatial cognition, sensory-motor integration, affect recognition, and/or executive function typically associated with neocortical damage; (2) neurobehavioral disorders: mood, affect, anxiety, posttraumatic stress, and psychosis, as well as agitation, sleep problems, and libido loss, that may have been caused by damage to the cortex, limbic system, and/or brain stem monoaminergic projection systems; (3) somatosensory disruptions: impaired smell, vision, hearing, equilibrium, taste, and somatosensory perception frequently caused by trauma to the sensory organs or their projections through the brain stem to central processing systems; (4) somatic symptoms: headache and chronic pain; and (5) substance dependence. TBI-related cognitive impairment is common in veterans who have served in recent conflicts in the Middle East and is often related to blasts from improvised explosive devices. Although neurobehavioral disorders such as depression and posttraumatic stress disorder commonly occur after combat, the presentation of such disorders in those with head injury may pass undetected with use of current diagnostic criteria and neuropsychological instruments. With a multidimensional approach (such as the biopsychosocial model) applied to each symptom cluster, psychological, occupational, and social dysfunction can be delineated and managed.

  View details for DOI 10.1682/JRRD.2008.08.0119

  View details for Web of Science ID 000272638100010

  View details for PubMedID 20104402

• Acetylcholinesterase inhibitor in combination with cognitive training in older adults JOURNALS OF GERONTOLOGY SERIES B-PSYCHOLOGICAL SCIENCES AND SOCIAL SCIENCES Yesavage, J. A., Friedman, L., Ashford, J. W., Kraemer, H. C., Mumenthaler, M. S., Noda, A., Hoblyn, J. 2008; 63 (5): P288-P294

  Abstract

  To determine if donepezil, an acetylcholinesterase (AChE) inhibitor, improved the assimilation of cognitive training by older adults with memory complaints, we gave 168 nondemented, community-dwelling volunteers with memory complaints either 5 mg of donepezil (Aricept) or placebo daily for 6 weeks in a randomized, double-blind, placebo-controlled trial. The dosage rose to 10 mg daily for another 6 weeks before a 2-week course of cognitive training and was maintained for the remainder of a year. Cognitive training improved performance; donepezil was well tolerated. However, there were no significant benefits of donepezil compared with placebo. An additional dose-ranging study with a starting dose of 5 mg a day suggests that the high dose was not the reason. Physiological tolerance may occur with chronic donepezil treatment and may increase AChE levels; this may be why short-term studies have shown the benefit of AChE inhibitor use in nondemented participants whereas chronic use has failed to enhance cognition.

  View details for Web of Science ID 000259517200004

  View details for PubMedID 18818443

• Subclinical anxiety symptoms, sleep, and daytime dysfunction in older adults with primary insomnia JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Spira, A. P., Friedman, L., Aulakh, J. S., Lee, T., Sheikh, J. I., Yesavage, J. A. 2008; 21 (2): 149-153

  Abstract

  Both insomnia complaints and anxiety disorders are common in older adults, and are associated with poor daytime functioning. The present study investigated whether subclinical levels of anxiety were associated with sleep disturbance and daytime functioning in older adults who met diagnostic criteria for primary insomnia, and therefore did not meet criteria for depression or an anxiety disorder. After adjustment for depressive symptoms, elevated state anxiety was associated with higher levels of wake after sleep onset (measured by both actigraphy and sleep log) and shorter sleep onset latency (measured by sleep log). Higher levels of trait anxiety were associated with greater wake after sleep onset (measured by sleep log). Elevated state and trait anxiety were associated with worse social functioning, and higher levels of trait anxiety were associated with worse role functioning. Thus, subclinical anxiety symptoms may be an important target for clinical intervention to improve sleep and functioning in older adults with primary insomnia.

  View details for DOI 10.1177/0891988707317120

  View details for Web of Science ID 000256077800008

  View details for PubMedID 18474724

• Subclinical anxiety symptoms, sleep, and daytime dysfunction in older adults with primary insomnia 20th Annual Meeting of the Associated-Professional-Sleep-Societies Spira, A. P., Friedman, L., Aulakh, J. S., Lee, T., Sheikh, J. I., Yesavage, J. A. SAGE PUBLICATIONS INC. 2008: 56–60

  Abstract

  "Both Insomnia complaints and anxiety-related distress are common in older adults, and are associated with poor daytime functioning. We investigated whether subclinical levels of anxiety were associated with sleep disturbance and daytime functioning in older adults who met diagnostic criteria for primary insomnia, and therefore but did not meet criteria for depression or an anxiety disorder. After adjustment for depressive symptoms, elevated state anxiety was associated with higher levels of wake after sleep onset (measured by both actigraphy and sleep log) and shorter sleep sleep onset latency (measured by sleep log). Higher levels of trait anxiety were associated with greater wake after sleep onset (measured by sleep log). Elevated state and trait anxiety were associated with worse and social functioning, and higher levels of trait anxiety were associated with worse role functioning. Thus, subclinical anxiety symptoms may be an important target for clinical intervention to improve sleep and functioning in older adults with primary insomnia."

  View details for DOI 10.1177/0891988707311043

  View details for Web of Science ID 000253457700008

  View details for PubMedID 18287171

• Donepezil treatment and Alzheimer disease: Can the results of Randomized clinical trials be applied to Alzheimer disease patients in clinical practice? 10th International Conference on Alzheimers Disease and Related Disorders Tinklenberg, J. R., Kraemer, H. C., Yaffe, K., Ross, L., Sheikh, J., Ashford, J. W., Yesavage, J. A., Taylor, J. L. LIPPINCOTT WILLIAMS & WILKINS. 2007: 953–60

  Abstract

  To determine if results from randomized clinical trials of donepezil in Alzheimer disease (AD) patients can be applied to AD patients in clinical practice by comparing the findings from a Nordic one-year randomized AD donepezil trial with data from a one-year prospective, observational study of AD patients.AD patients from a consortium of California sites were systematically followed for at least one year. Their treatment regimens, including prescription of donepezil, were determined by their individual physician according to his or her usual criteria.The 148 California patients treated with donepezil had a one-year decline of 1.3 (3.5 SD) points on the Mini-Mental State Exam compared to a decline of 3.3 (4.4 SD) in the 158 AD patients who received no anti-Alzheimer drugs. The Mini-Mental State Exam decline in Nordic sample was approximately 0.25 points for the 91 patients receiving donepezil and approximately 2.2 for the 98 placebo patients. The overall effect sizes were estimated at about 0.49 in both studies. The California data were further analyzed using propensity methods; after taking into account differences that could bias prescribing decisions, benefits associated with taking donepezil remained.A comparison of a randomized clinical trial of donepezil in AD patients and this observational study indicates that if appropriate methodological and statistical precautions are undertaken, then results from randomized clinical trials can be predictive with AD patients in clinical practice. This California study supports the modest effectiveness of donepezil in AD patients having clinical characteristics similar to those of the Nordic study.

  View details for Web of Science ID 000250617800005

  View details for PubMedID 17974866

• Classification and prediction of clinical Alzheimer's diagnosis based on plasma signaling proteins NATURE MEDICINE Ray, S., Britschgi, M., Herbert, C., Takeda-Uchimura, Y., Boxer, A., Blennow, K., Friedman, L. F., Galasko, D. R., Jutel, M., Karydas, A., Kaye, J. A., Leszek, J., Miller, B. L., Minthon, L., Quinn, J. F., Rabinovici, G. D., Robinson, W. H., Sabbagh, M. N., So, Y. T., Sparks, D. L., Tabaton, M., Tinklenberg, J., Yesavage, J. A., Tibshirani, R., Wyss-Coray, T. 2007; 13 (11): 1359-1362

  Abstract

  A molecular test for Alzheimer's disease could lead to better treatment and therapies. We found 18 signaling proteins in blood plasma that can be used to classify blinded samples from Alzheimer's and control subjects with close to 90% accuracy and to identify patients who had mild cognitive impairment that progressed to Alzheimer's disease 2-6 years later. Biological analysis of the 18 proteins points to systemic dysregulation of hematopoiesis, immune responses, apoptosis and neuronal support in presymptomatic Alzheimer's disease.

  View details for DOI 10.1038/nm1653

  View details for Web of Science ID 000250736900029

  View details for PubMedID 17934472

• Should one use medications in combination with cognitive training? If so, which ones? JOURNALS OF GERONTOLOGY SERIES B-PSYCHOLOGICAL SCIENCES AND SOCIAL SCIENCES Yesavage, J., Hoblyn, J., Friedman, L., Mumenthaler, M., Schneider, B., O'Hara, R. 2007; 62: 11-18

  Abstract

  In this article, we review current research regarding diagnosis of cognitive impairment in nondemented adults and discuss why medications and cognitive training together may be more beneficial than either alone. We also review potential cognitive enhancers and future research challenges. There are major reasons for such research: (a) Large numbers of older adults without dementia but with cognitive problems are not treatable with current cognitive training techniques; (b) some medications offer a rationale (i.e., cognitive enhancement) and some evidence that they might be a useful adjunct; and (c) there are unanswered questions about which population to target, which medications to use, how to administer them, and issues regarding tolerance and use of appropriate (active) placebo controls. As the number of cognitively impaired older adults grows, it is likely that there will be pressure to treat more broadly with both medications and cognitive training.

  View details for Web of Science ID 000253836500002

  View details for PubMedID 17565161

• In Alzheimer disease, increased wake fragmentation found in those with lower hypocretin-1 NEUROLOGY Friedman, L. F., Zeitzer, J. M., Lin, L., Hoff, D., Mignot, E., Peskind, E. R., Yesavage, J. A. 2007; 68 (10): 793-794

  View details for Web of Science ID 000244679900020

  View details for PubMedID 17339595

• Pilot age and expertise predict flight simulator performance - A 3-year longitudinal study NEUROLOGY Taylor, J. L., Kennedy, Q., Noda, A., Yesavage, J. A. 2007; 68 (9): 648-654

  Abstract

  Expert knowledge may compensate for age-related declines in basic cognitive and sensory-motor abilities in some skill domains. We investigated the influence of age and aviation expertise (indexed by Federal Aviation Administration pilot ratings) on longitudinal flight simulator performance.Over a 3-year period, 118 general aviation pilots aged 40 to 69 years were tested annually, in which their flight performance was scored in terms of 1) executing air-traffic controller communications; 2) traffic avoidance; 3) scanning cockpit instruments; 4) executing an approach to landing; and 5) a flight summary score.More expert pilots had better flight summary scores at baseline and showed less decline over time. Secondary analyses revealed that expertise effects were most evident in the accuracy of executing aviation communications, the measure on which performance declined most sharply over time. Regarding age, even though older pilots initially performed worse than younger pilots, over time older pilots showed less decline in flight summary scores than younger pilots. Secondary analyses revealed that the oldest pilots did well over time because their traffic avoidance performance improved more vs younger pilots.These longitudinal findings support previous cross-sectional studies in aviation as well as non-aviation domains, which demonstrated the advantageous effect of prior experience and specialized expertise on older adults' skilled cognitive performances.

  View details for Web of Science ID 000244482400005

  View details for PubMedID 17325270

• Hypocretin-1 is inversely associated with wake fragmentation in Alzheimer's disease 21st Annual Meeting of the American-Professional-Sleep-Societies Zeitzer, J., Friedman, L., Lin, L., Mignot, E., Peskind, E., Yesavage, J. AMER ACAD SLEEP MEDICINE. 2007: A302–A302

  View details for Web of Science ID 000246224900882

• Coping, symptoms, and functioning outcomes of patients with posttraumatic stress disorder JOURNAL OF TRAUMATIC STRESS Tiet, Q. Q., Rosen, C., Cavella, S., Moos, R. H., Finney, J. W., Yesavage, J. 2006; 19 (6): 799-811

  Abstract

  This study examines the association between approach coping and better functioning outcomes and the reciprocal relationships between coping and posttraumatic stress disorder (PTSD) symptoms in patients diagnosed with PTSD. Posttraumatic stress disorder patients receiving services in five VA health care systems were randomly selected and surveyed at baseline and followed 10 months later. Analyses of longitudinal data using structural equation modeling techniques showed that more approach coping predicted better family and social functioning. Cognitive avoidance coping predicted more PTSD symptoms, and more PTSD symptoms predicted more approach coping and more behavioral avoidance coping. Approach coping may enable patients with chronic PTSD to establish and maintain better relationships with family and friends, despite continuing PTSD.

  View details for DOI 10.1002/jts.20185

  View details for Web of Science ID 000243184200005

  View details for PubMedID 17195979

• The Cost-Time Index: A new method for measuring the efficiencies of recruitment-resources in clinical trials CONTEMPORARY CLINICAL TRIALS Ota, K. S., Friedman, L., Ashford, J. W., Hernandez, B., Penner, A. L., Stepp, A. M., Raam, R., Yesavage, J. A. 2006; 27 (6): 494-497

  Abstract

  Paid media are important resources used to recruit subjects in clinical trials. An index for evaluating which advertising resource has minimal cost and time requirement for patient accrual, for a given study design, has not been previously introduced. In this communication the authors present a new index, the Cost-Time Index, which represents a measure of the average amount of money and time spent, simultaneously, on a given advertising resource to recruit one analyzable subject. This index can be calculated using retrospective data and may be a useful tool for comparing recruitment efficiencies among various resources. The authors demonstrate the utility of the Cost-Time Index and recommend its use as an additional variable in future studies regarding recruitment strategies in clinical trials.

  View details for DOI 10.1016/j.cct.2006.05.008

  View details for Web of Science ID 000242790000002

  View details for PubMedID 16820328

• No improvement of posttraumatic stress disorder symptoms with guanfacine treatment AMERICAN JOURNAL OF PSYCHIATRY Neylan, T. C., Lenoci, M., Samuelson, K. W., Metzler, T. J., Henn-Haase, C., Hierholzer, R. W., Lindley, S. E., Otte, C., Schoenfeld, F. B., Yesavage, J. A., Marmar, C. R. 2006; 163 (12): 2186-2188

  Abstract

  The authors report an 8-week, double-blind, randomized controlled trial of guanfacine versus placebo for posttraumatic stress disorder (PTSD).Veterans with chronic PTSD who were medication-free or receiving stable pharmacotherapy were randomly assigned to guanfacine (N=29) versus placebo (N=34).Guanfacine had no effect on PTSD symptoms, subjective sleep quality, or general mood disturbances. Guanfacine was associated with a number of side effects.These results do not support the use of alpha 2 agonists in veterans with chronic PTSD.

  View details for Web of Science ID 000242626000029

  View details for PubMedID 17151174

• Factors associated with psychiatric hospitalization of individuals diagnosed with dementia and comorbid bipolar disorder JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Brooks, J. O., Hoblyn, J. C., Kraemer, H. C., Yesavage, J. A. 2006; 19 (2): 72-77

  Abstract

  The objective was to determine risk factors of psychiatric hospitalization among a Veterans Administration database of patients with dementia and comorbid bipolar disorder (D+BD). Patients with D+BD had a greater prevalence of psychiatric hospitalization (28% vs 4%). The strongest predictor of psychiatric hospitalization was the presence of an alcohol use disorder (51% risk); patients without alcohol use disorders but under the age of 70 had the next highest risk (33% risk). However, patients with an alcohol use disorder had shorter psychiatric hospitalizations than those without. Compared with patients without BD, D+BD patients were more likely to have alcohol use disorders (15% vs 3%) and any other substance use problem (10% vs 1%). In patients diagnosed with dementia and bipolar disorder, the strongest risk factor for psychiatric hospitalization was an alcohol abuse disorder. These findings suggest that disorders with increased frequency in BD affect the course of dementia.

  View details for DOI 10.1177/0891988706286215

  View details for Web of Science ID 000237778800003

  View details for PubMedID 16690991

• Caution regarding the use of pilot studies to guide power calculations for study proposals ARCHIVES OF GENERAL PSYCHIATRY Kraemer, H. C., Mintz, J., Noda, A., Tinklenberg, J., Yesavage, J. A. 2006; 63 (5): 484-489

  Abstract

  Clinical researchers often propose (or review committees demand) pilot studies to determine whether a study is worth performing and to guide power calculations. The most likely outcomes are that (1) studies worth performing are aborted and (2) studies that are not aborted are underpowered. There are many excellent reasons for performing pilot studies. The argument herein is not meant to discourage clinical researchers from performing pilot studies (or review committees from requiring them) but simply to caution against their use for the objective of guiding power calculations.

  View details for Web of Science ID 000237215800002

  View details for PubMedID 16651505

• The brain-derived neurotrophic factor Val66Met polymorphism and rate of decline in Alzheimer's disease JOURNAL OF ALZHEIMERS DISEASE Chuu, J. Y., Taylor, J. L., Tinklenberg, J., Noda, A., Yesavage, J., Murphy, G. M. 2006; 9 (1): 43-49

  Abstract

  It is largely unknown why some patients with Alzheimer's disease (AD) decline cognitively more rapidly than others. Genetic differences among patients could influence rate of decline. Brain-derived neurotrophic factor (BDNF) is a neurotrophin important in the survival neurons and in memory function. BDNF levels are reduced in the brain in AD. The Val66Met polymorphism in the BDNF gene modifies neuronal BDNF secretion, and affects hippocampal function and memory performance. We tested the hypothesis that the BDNF Val66Met polymorphism influences rate of cognitive decline in AD. In a sample of 149 AD patients followed for an average of 3.9 years, we found no effect of BDNF Val66Met genotype on rate of change in the Mini Mental State Examination. Results were similar when we excluded patients taking an acetylcholinesterase inhibitor, those placed in a nursing home during the study, or those with a neuropathological diagnosis that included AD plus an entity other than AD. We also found no evidence that the effects of the BDNF Val66Met genotype depend on APOE genotype, which itself had no effect on rate of cognitive change. These findings suggest that the functional BDNF Val66Met variant is not a major determinant of rate of cognitive decline in AD.

  View details for Web of Science ID 000237795900004

  View details for PubMedID 16627933

• Factors in choosing atypical antipsychotics: Toward understanding the bases of physicians' prescribing decisions JOURNAL OF PSYCHIATRIC RESEARCH Hoblyn, J., Noda, A., Yesavage, J. A., Brooks, J. O., Sheikh, J., Lee, T., Tinklenberg, J. R., Schneider, B., O'Hara, R., Leslie, D. L., Rosenheck, R. A., Kraemer, H. C. 2006; 40 (2): 160-166

  Abstract

  Off-label prescribing of medications, polypharmacy, and other questionable prescribing practices have led investigators to examine a large VA pharmacy database to determine if physician prescribing decisions appear reasonable.The current study addresses the question of physician prescribing of atypical antipsychotics in 34,925 veterans with schizophrenia, using a series of signal detection analyses.These results suggest that only three factors (hospital size, age, and secondary diagnosis) allow classification of patients prescribed atypicals into three groups with frequencies of use of atypicals ranging from 43% to 79%, and that these results are consistent with reasonable clinical practice.Results of two-stage signal detection analyses are readily interpretable by clinicians and administrators who are faced with the task of evaluating how physicians prescribe medications in clinical practice. Physicians' decisions to prescribe atypical antipsychotics are based on both patient and fiscal considerations. This likely reflects a combination of clinical judgment and institutional guidelines.

  View details for DOI 10.1016/j.jpsychires.2005.06.004

  View details for Web of Science ID 000235641200009

  View details for PubMedID 16150458

• Hormone replacement therapy and longitudinal cognitive performance in postmenopausal women AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY O'Hara, R., Schroder, C. M., Bloss, C., Bailey, A. M., Alyeshmerni, A. M., Mumenthaler, M. S., Friedman, L. F., Yesavage, J. A. 2005; 13 (12): 1107-1110

  Abstract

  The authors examined the impact of hormone replacement therapy (HRT) on longitudinal cognitive performance (controlling for mood state) in 69 community-dwelling, postmenopausal women.The authors conducted a 5-year follow-up of cognitive performance in 37 postmenopausal HRT users and 32 non-users. The groups did not differ with respect to age, years of education, or inter-test interval.No main effect of HRT was observed on any of the cognitive measures, and depressive symptomatology did not affect the relationship between HRT and cognition.Overall, our findings do not suggest that HRT affects longitudinal cognitive performance in postmenopausal, community-dwelling older women.

  View details for Web of Science ID 000233614500011

  View details for PubMedID 16319304

• Nocturnal sleep apnea/hypopnea is associated with lower memory performance in APOE epsilon 4 carriers NEUROLOGY O'Hara, R., Schroder, C. M., Kraemer, H. C., Kryla, N., Cao, C., Miller, E., Schatzberg, A. F., Yesavage, J. A., Murphy, G. M. 2005; 65 (4): 642-644

  Abstract

  The authors investigated the relationship between obstructive sleep apnea/hypopnea (OSAH) and cognition in 36 older adults, 18 APOE epsilon4 carriers, and 18 non-carriers. Greater numbers of respiratory events negatively impacted memory function in epsilon4 carriers only. This is the first study to provide preliminary evidence for a negative interaction of APOE epsilon4 and OSAH on memory in older adults, which may have important implications for treating cognitive decline and delaying dementia onset.

  View details for Web of Science ID 000231371600035

  View details for PubMedID 16116137

• Relating medial temporal lobe volume to frontal fMRI activation for memory encoding in older adults CORTEX Rosen, A. C., Gabrieli, J. D., Stoub, T., Prull, M. W., O'Hara, R., Yesavage, J., DeToledo-Morrell, L. 2005; 41 (4): 595-602

  Abstract

  Neuroimaging research on the brain basis of memory decline in older adults typically has examined age-related changes either in structure or in function. Structural imaging studies have found that smaller medial temporal lobe (MTL) volumes are associated with lower memory performance. Functional imaging studies have found that older adults often exhibit bilateral frontal-lobe activation under conditions where young adults exhibit unilateral frontal activation. As yet, no one has examined whether these MTL structural and frontal-lobe functional findings are associated. In this study, we tested whether these findings were correlated in a population of healthy older adults in whom we previously demonstrated verbal memory performance was positively associated with left entorhinal cortex volume in the MTL (Rosen et al., 2003) and right frontal lobe activation during memory encoding (Rosen et al., 2002). Thirteen, non-demented, community-dwelling older adults participated both in a functional MRI (fMRI) study of verbal memory encoding and structural imaging. MRI-derived left entorhinal volume was measured on structural images and entered as a regressor against fMRI activation during verbal memory encoding. Right frontal activation (Brodmann's Area 47/insula) was positively correlated with left entorhinal cortex volume. These findings indicate a positive association between MTL volume and right frontal-lobe function that may underlie variability in memory performance among the elderly, and also suggest a two-stage model of memory decline in aging.

  View details for Web of Science ID 000230574200015

  View details for PubMedID 16042035

• Tolerability and effectiveness of lamotrigine in complex elderly patients JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Aulakh, J. S., Hawkins, J. W., Athwal, H. S., Sheikh, J. I., Yesavage, J., Tinklenberg, J. R. 2005; 18 (1): 8-11

  Abstract

  There is paucity of medical literature on the use of lamotrigine in elderly patients who have behavior problems and diverse psychiatric syndromes. This article is a retrospective case series summarizing the authors' experience with this medication. In a 20-patient case series from an institutional review board-approved retrospective chart review, the tolerability and efficacy of lamotrigine was evaluated for the management of agitated and aggressive behaviors in nursing home patients with a range of psychiatric and medical diagnoses. Nineteen of the elderly nursing home patients tolerated lamotrigine treatment, and 18 showed modest clinical improvement. These results support the authors' belief that controlled clinical investigations of this medication should be performed.

  View details for DOI 10.1177/0891988704271762

  View details for Web of Science ID 000226923100002

  View details for PubMedID 15681622

• Cognitive ability, expertise, and age differences in following air-traffic control instructions 9th Biennial Cognitive Aging Conference Taylor, J. L., O'Hara, R., Mumenthaler, M. S., Rosen, A. C., Yesavage, J. A. AMER PSYCHOLOGICAL ASSOC. 2005: 117–33

  Abstract

  Differences in cognitive ability and domain-specific expertise may help explain age differences in pilot performance. Pilots heard air-traffic controller messages and then executed them while "flying" in a simulator. Messages varied in length and speech rate. Age was associated with lower accuracy, but the expected Age x Message Difficulty interactions were not obtained. Expertise, as indexed by pilot ratings, was associated with higher accuracy; yet expertise did not reduce age differences in accuracy. The effect of age on communication task accuracy was largely explainable as an age-associated decrease in working memory span, which in turn was explainable as decreases in both speed and interference control. Results are discussed within frameworks of deliberate practice and cognitive mediation of age differences.

  View details for DOI 10.1037/0882-7974.20.1.117

  View details for Web of Science ID 000227731300009

  View details for PubMedID 15769218

• The development and initial validation of the Terminally Ill Grief or Depression Scale (TIGDS) INTERNATIONAL JOURNAL OF METHODS IN PSYCHIATRIC RESEARCH Periyakoil, V. S., Kraemer, H. C., Noda, A., Moos, R., Hallenbeck, J., Webster, M., Yesavage, J. A. 2005; 14 (4): 202-212

  Abstract

  Patients often experience 'preparatory-grief' as they cope with the dying process. Some may be depressed. The Terminally Ill Grief or Depression Scale (TIGDS), comprising grief and depression sub-scales, is a new self-report measure designed to differentiate between preparatory-grief and depression in adult inpatients. The initial 100-item inventory was assembled based on literature review, interviews with clinicians and dying patients and then shortened to 42 items based on consensus expert opinion. Validity and reliability were tested in a sample of 55 terminally ill adults. The consensus clinical opinion was used as the gold standard to differentiate between preparatory grief and depression. The intra-class correlation coefficient was high (it was calculated to estimate the test-retest reliability for the 47 patients who had completed the TIGDS twice--retest was administered 2 to 7 days after the initial test), ranging from 0.86 (grief) to 0.97 (depression). The validity of TIGDS was assessed using a receiver operating characteristic curve analysis, comparing the first test with the clinical criterion. The first and only variable and cut-point was the depression score (chi-square = 18.4, p < 0.001, cut point = 3). The sensitivity of the TIGDS was 0.727 and specificity was 0.886 for the depression = 3 cutoff score. The construct validity of the TIGDS was tested by comparing with the Hospital Anxiety and Depression Scale (HADS). The TIGDS depression subscale showed strong convergent validity and the TIGDS grief subscale showed strong discriminant validity with the HADS total score.

  View details for DOI 10.1002/mpr.8

  View details for Web of Science ID 000234094000003

  View details for PubMedID 16395873

• Sleep apnea/hypopnea is associated with lower memory performance in APOE epsilon 4 allele carriers only 19th Annual Meeting of the Associated-Professional-Sleep-Societies O'Hara, R. M., Schroder, C. M., Kraemer, H. C., Kryla, N. R., Cao, C., Miller, E. H., Schatzberg, A. F., Yesavage, J. A., Murphy, G. M. AMER ACAD SLEEP MEDICINE. 2005: A109–A109

  View details for Web of Science ID 000228906100322

• Sleep and circadian abnormalities in a transgenic mouse model of Alzheimer's disease: A role for cholinergic transmission NEUROSCIENCE Wisor, J. P., Edgar, D. M., Yesavage, J., Ryan, H. S., McCormick, C. M., Lapustea, N., Murphy, G. M. 2005; 131 (2): 375-385

  Abstract

  The Tg2576 mouse model of Alzheimer's disease (AD) exhibits age-dependent amyloid beta (Abeta) deposition in the brain. We studied electroencephalographically defined sleep and the circadian regulation of waking activities in Tg2576 mice to determine whether these animals exhibit sleep abnormalities akin to those in AD. In Tg2576 mice at all ages studied, the circadian period of wheel running rhythms in constant darkness was significantly longer than that of wild type mice. In addition, the increase in electroencephalographic delta (1-4 Hz) power that occurs during non-rapid eye movement sleep after sleep deprivation was blunted in Tg2576 mice relative to controls at all ages studied. Electroencephalographic power during non-rapid eye movement sleep was shifted to higher frequencies in plaque-bearing mice relative to controls. The wake-promoting efficacy of the acetylcholinesterase inhibitor donepezil was lower in plaque-bearing Tg2576 mice than in controls. Sleep abnormalities in Tg2576 mice may be due in part to a cholinergic deficit in these mice. At 22 months of age, two additional deficits emerged in female Tg2576 mice: time of day-dependent modulation of sleep was blunted relative to controls and rapid eye movement sleep as a percentage of time was lower in Tg2576 than in wild type controls. The rapid eye movement sleep deficit in 22 month-old female Tg2576 mice was abolished by brief passive immunization with an N-terminal antibody to Abeta. The Tg2576 model provides a uniquely powerful tool for studies on the pathophysiology of and treatments for sleep deficits and associated cholinergic abnormalities in AD.

  View details for DOI 10.1016/j.neuroscience.2004.11.018

  View details for Web of Science ID 000227258400011

  View details for PubMedID 15708480

• The measurement of sleep by actigraphy: Direct comparison of 2 commercially available actigraphs in a nonclinical population SLEEP Benson, K., Friedman, L., Noda, A., Wicks, D., Wakabayashi, E., Yesavage, J. 2004; 27 (5): 986-989

  Abstract

  To compare 2 commercially available actigraphs.Subjects wore the Actiwatch L and the Basic Mini-Motionlogger for 2 nights.Naturalistic.20 healthcare workers aged 24 to 64 years.Measures included sleep latency, total sleep time, wake after sleep onset, and sleep efficiency. Actiwatch L data were analyzed at 3 sensitivity settings.The Mini-Motionlogger reported more total sleep time, less wake after sleep onset, and greater sleep efficiency than the Actiwatch L set at high sensitivity. It also reported more wake after sleep onset than the Actiwatch L set at low sensitivity.Both devices achieved similar overall performance when the Actiwatch L was set at medium sensitivity.

  View details for Web of Science ID 000223451400023

  View details for PubMedID 15453559

• Validation of a 26-point telephone version of the mini-mental state examination JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Newkirk, L. A., Kim, J. A., Thompson, J. M., Tinklenberg, J. R., Yesavage, J. A., Taylor, J. L. 2004; 17 (2): 81-87

  Abstract

  The objective of this study was to assess the convergent validity of a 26-point Telephone Mini-Mental State Examination (MMSE) in a longitudinal cohort of 46 Alzheimer's disease (AD) patients. Paired in-person and telephone MMSE observations were collected within 35 days of each other. The setting was the Stanford/VA Alzheimer's Center in Palo Alto, California, and patients' residences. The 30-point Folstein MMSE was administered in-person, and a 26-point telephone version of the MMSE, adapted from the Adult Lifestyles and Function Interview (ALFI)-MMSE. Total scores for the in-person and telephone MMSE versions correlated strongly (Pearson's r =.88, P <.001). Hearing impairment and education level did not significantly affect telephone-based performance. The Telephone MMSE can be used to validly estimate in-person MMSE scores of patients with AD. Use of this practical measure can enhance reassessment if returning to the clinic is difficult or if a change in the patient's medical condition merits a check of mental status by telephone.

  View details for DOI 10.1177/0891988704264534

  View details for Web of Science ID 000223475100005

  View details for PubMedID 15157348

• VA practice patterns and practice guidelines for treating posttraumatic stress disorder JOURNAL OF TRAUMATIC STRESS Rosen, C. S., Chow, H. C., Finney, J. F., Greenbaum, M. A., Moos, R. H., Sheikh, J. I., Yesavage, J. A. 2004; 17 (3): 213-222

  Abstract

  Little is known about how recent ISTSS practice guidelines (E. B. Foa, T. M. Keane, & M. J. Friedman, 2000) compare with prevailing PTSD treatment practices for veterans. Prior to guideline dissemination, clinicians in 6 VA medical centers were surveyed in 1999 (n = 321) and in 2001 (n = 271) regarding their use of various assessment and treatment procedures. Practices most consistent with guideline recommendations included psychoeducation, coping skills training, attention to trust issues, depression and substance use screening, and prescribing of SSRIs, anticonvulsants, and trazodone. PTSD and trauma assessment, anger management, and sleep hygiene practices were provided less consistently. Exposure therapy was rarely used. Additional research is needed on training, clinical resources, and organizational factors that may influence VA implementation of guideline recommendations.

  View details for Web of Science ID 000221686900004

  View details for PubMedID 15253093

• Sleep/wake disruption in Alzheimer's disease: APOE status and longitudinal course JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Yesavage, J. A., Friedman, L., Kraemer, H., Tinklenberg, J. R., Salehi, A., Noda, A., Taylor, J. L., O'Hara, R., Murphy, G. 2004; 17 (1): 20-24

  Abstract

  Disturbed sleep is a major clinical problem in Alzheimer's disease (AD). Apolipoprotein epsilon4 (APOE epsilon4) carrier status may increase risk of AD, yet there are no data on relations between APOE status and progression of sleep disturbance in AD. The objective of this study was to determine if sleep parameters in AD patients change over time as a function of APOE carrier status. Forty-four community-dwelling AD patients with diagnosis of probable AD were followed from early stages of disease. Their sleep/wake parameters were compared according to APOE status. For APOE epsilon4 carriers, only wake after sleep onset (WASO) increased in association with lower cognitive function as indicated by the Mini-Mental State Examination (MMSE); for non-epsilon4 subjects, increases in WASO and declines in total sleep time, sleep efficiency, and the amplitude of the rest/activity circadian rhythm over time were associated with lower performance on the MMSE. In these data, APOE status was associated with the progression of sleep/wake disturbances in AD. Overall, there was greater deterioration on sleep parameters in patients negative for the epsilon4 allele.

  View details for DOI 10.1117/0891988703261994

  View details for Web of Science ID 000223474900004

  View details for PubMedID 15018693

• Use of a VA pharmacy database to screen for areas at high risk for disease: Parkinson's disease and exposure to pesticides JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Yesavage, J. A., Sheikh, J., Noda, A., Murphy, G., O'Hara, R., Hierholzer, R., Battista, M., Ashford, J. W., Kraemer, H. C., Tinklenberg, J. 2004; 17 (1): 36-38

  Abstract

  The purpose of this study was to assess whether pharmacy database information from US Department of Veterans Affairs (VA) medical centers could be used to screen for areas of higher Parkinson's disease prevalence in patients exposed to pesticides. The authors used pharmacy data sets and compared the use of antiparkinsonian medications at 2 VA medical centers in California: one in Palo Alto, near the ocean, and one in Fresno, downwind from extensively farmed parts of the Central Valley. They found that patients at Fresno had higher odds ratios (1.5-1.8) for the use of Parkinson's disease medications than patients at Palo Alto. These data are consistent with the observations of prior epidemiologic studies and suggest that VA pharmacy databases can prioritize locations for further epidemiologic research. However, a thorough exploration of alternative explanations is needed to reach definitive conclusions regarding the findings suggested by this method.

  View details for DOI 10.1117/0891988703258672

  View details for Web of Science ID 000223474900007

  View details for PubMedID 15018696

• Differential associations between entorhinal and hippocampal volumes and memory performance in older adults BEHAVIORAL NEUROSCIENCE Rosen, A. C., Prull, M. W., Gabrieli, J. D., Stoub, T., O'Hara, R., Friedman, L., Yesavage, J. A., DeToledo-Morrell, L. 2003; 117 (6): 1150-1160

  Abstract

  Magnetic resonance imaging-derived entorhinal and hippocampal volumes were measured in 14 nondemented, community-dwelling older adults. Participants were selected so that memory scores from 2 years prior to scanning varied widely but were not deficient relative to age-appropriate norms. A median split of these memory scores defined high-memory and low-memory groups. Verbal memory scores at the time of imaging were lower, and entorhinal and hippocampal volumes were smaller, in the low-memory group than in the high-memory group. Left entorhinal cortex volume showed the strongest correlation (r= .79) with immediate recall of word lists. Left hippocampal volume showed the strongest correlation (r= .57) with delayed paragraph recall. These results suggest that entorhinal and hippocampal volumes are related to individual differences in dissociable kinds of memory performance among healthy older adults.

  View details for DOI 10.1037/0735-7044.117.6.1150

  View details for Web of Science ID 000187402300004

  View details for PubMedID 14674836

• Age and disease severity predict choice of atypical neuroleptic: a signal detection approach to physicians' prescribing decisions JOURNAL OF PSYCHIATRIC RESEARCH Yesavage, J. A., Hoblyn, J., Sheikh, J., Tinklenberg, J. R., Noda, A., O'Hara, R., Fenn, C., Mumenthaler, M. S., Friedman, L., Kraemer, H. C. 2003; 37 (6): 535-538

  Abstract

  We used a novel application of a signal detection technique, receiver operator characteristics (ROC), to describe factors entering a physician's decision to switch a patient from a typical high potency neuroleptic to a particular atypical, olanzapine (OLA) or risperidone (RIS).ROC analyses were performed on pharmacy records of 476 VA patients who had been treated on a high potency neuroleptic then changed to either OLA or RIS.Overall 68% patients switched to OLA and 32% to RIS. The best predictor of neuroleptic choice was age at switch, with 78% of patients aged less than 55 years receiving OLA and 51% of those aged greater than or equal to 55 years receiving OLA (chi(2)=38.2, P<0.001). Further analysis of the former group indicated that adding the predictor of one or more inpatient days to age increased the likelihood of an OLA switch from 78% to 85% (chi(2)=7.3, P<0.01) while further analysis of the latter group indicated that adding the predictor of less than 10 inpatients days to age decreased the likelihood of an OLA switch from 51% to 45% (chi(2)=7.0, P<0.01).ROC analyses have the advantage over other analyses, such as regression techniques, insofar as their "cut-points" are readily interpretable, their sequential use forms an intuitive "decision tree" and allows the potential identification of clinically relevant "subgroups". The software used in this analysis is in the public domain (http://mirecc.stanford.edu).

  View details for DOI 10.1016/S0022-3956(03)00053-0

  View details for Web of Science ID 000186239700010

  View details for PubMedID 14563385

• Development of diagnostic criteria for defining sleep disturbance in Alzheimer's disease JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Yesavage, J. A., Friedman, L., Ancoli-Israel, S., Bliwise, D., Singer, C., Vitiello, M. V., Monjan, A. A., Lebowitz, B. 2003; 16 (3): 131-139

  Abstract

  This article proposes new standards for identifying, defining, and naming sleep/wake cycle disturbances associated with Alzheimer's disease (AD) to aid in more effective research, including the development and testing of potential treatments. Many AD patients develop sleep/wake cycle disturbances associated with distress, depression, and sleep disturbances in the caregiver, as well as early nursing home placement for the patient. The Food and Drug Administration Psychopharmacological Drugs Advisory Committee has emphasized the need for a comprehensive diagnostic system. A key point made by the committee was that behavioral problems associated with dementia (including sleep and chronobiological disturbances) are scientifically and clinically valid targets of pharmacologic treatment. However, current diagnostic criteria preclude development of FDA-acceptable studies of pharmacological interventions because they do not include the required specific indications for treatment. This article attempts to develop better-defined provisional criteria with the goal of promoting epidemiological, physiological, and, especially, pharmacological research on sleep/wake disturbances.

  View details for DOI 10.1177/0891988703255684

  View details for Web of Science ID 000223380400001

  View details for PubMedID 12967054

• Psychoactive drugs and pilot performance: A comparison of nicotine, donepezil, and alcohol effects NEUROPSYCHOPHARMACOLOGY Mumenthaler, M. S., Yesavage, J. A., Taylor, J. L., O'Hara, R., Friedman, L., LEE, H., Kraemer, H. C. 2003; 28 (7): 1366-1373

  Abstract

  The cholinergic system plays a major role in cognitive abilities that are essential to piloting an aircraft: attention, learning, and memory. In previous studies, drugs that enhance the cholinergic system through different pharmacologic mechanisms have shown beneficial effects on cognition; but dissimilar cognitive measures were used and samples were not comparable. A comparison within the same cognitive tasks, within comparable samples appears desirable. Toward this aim, we compared effect sizes (ES) of performance-enhancing doses of nicotine (a nicotinic receptor agonist) and donepezil (an acetylcholinesterase inhibitor) as found in our prior work on pilot performance. We also compared cholinergic ES to those of performance-impairing doses of alcohol. In three randomized, placebo-controlled trials, we assessed the flight performance of aircraft pilots in a Frasca 141 simulator, testing I: the acute effects of nicotine gum 2 mg; II: the effects of administration of 5 mg donepezil/day for 30 days; and III: the acute and 8 h-carryover effects of alcohol after a target peak BAC of 0.10%. We calculated the ES of nicotine, donepezil, and alcohol on a flight summary score and on four flight component scores. Compared to placebo, nicotine and donepezil significantly improved, while alcohol significantly impaired overall flight performance: ES (nicotine)=0.80; ES (donepezil)=1.02; ES (alcohol acute)=-3.66; ES (alcohol 8 h)=-0.82. Both cholinergic drugs showed the largest effects on flight tasks requiring sustained visual attention. Although the two tested cholinergic drugs have different pharmacologic mechanisms, their effects on flight performance were similar in kind and size. The beneficial effects of the cholinergic drugs on overall flight performance were large and the absolute (ie nondirectional) sizes were about one-fourth of the absolute ES of acute alcohol intoxication and roughly the same as the absolute 8 h-carryover ES of alcohol.

  View details for DOI 10.1038/sj.npp.1300202

  View details for Web of Science ID 000183773000018

  View details for PubMedID 12784106

• Use of an external mnemonic to augment the efficacy of an internal mnemonic in older adults INTERNATIONAL PSYCHOGERIATRICS Brooks, J. O., Friedman, L., Yesavage, J. A. 2003; 15 (1): 59-67

  Abstract

  To evaluate the impact of external memory devices on the efficacy of a package of internal mnemonic techniques. Participants wrote two types of lists during the study phase: (a) a list of study words and/or (b) a loci list. At recall, participants were not allowed to refer to either of the lists they had written during the study.2 x 2 factorial with writing study words ("write" or "not write") and writing down a previously established loci list ("write" or "not write") manipulated as between-participants variables.68 community-dwelling adults 55 years of age and older who wished to improve their memory.Free word recall.There were statistically significant effects of writing the loci list, but not of writing the list of study words. Scores were higher when participants wrote the loci lists compared to when they did not.Use of external mnemonics may enhance the efficacy of internal mnemonics, even when the external mnemonic is not used at the time of recall.

  View details for Web of Science ID 000183289600007

  View details for PubMedID 12834200

• Sleep/wake cycle disturbance in Alzheimer's disease: Longitudinal change in relation to APOE status Yesavage, J., Friedman, L., Kraemer, H., Murphy, G., Salehi, A., O'Hara, R., Noda, A., Taylor, J., Tinklenberg, J. CAMBRIDGE UNIV PRESS. 2003: 241–241

  View details for Web of Science ID 000222209400569

• Variable effects of aging on frontal lobe contributions to memory NEUROREPORT Rosen, A. C., Prull, M. W., O'Hara, R., Race, E. A., Desmond, J. E., Glover, G. H., Yesavage, J. A., Gabrieli, J. D. 2002; 13 (18): 2425-2428

  Abstract

  Declarative memory declines with age, but there is profound variation in the severity of this decline. Healthy elderly adults with high or low memory scores and young adults viewed words under semantic or non-semantic encoding conditions while undergoing fMRI. Young adults had superior memory for the words, and elderly adults with high memory scores had better memory for the words than those with low memory scores. The elderly with high scores had left lateral and medial prefrontal activations for semantic encoding equal to the young, and greater right prefrontal activation than the young. The elderly with low scores had reduced activations in all three regions relative to the elderly with high memory scores. Thus, successful aging was characterized by preserved left prefrontal and enhanced right prefrontal activation that may have provided compensatory encoding resources.

  View details for DOI 10.1097/01.wnr.0000048001.96487.05

  View details for Web of Science ID 000180673200010

  View details for PubMedID 12499842

• Ethical, and practical issues in applying functional imaging to the clinical management of Alzheimer's disease BRAIN AND COGNITION Rosen, A. C., Bokde, A. L., Pearl, A., Yesavage, J. A. 2002; 50 (3): 498-519

  Abstract

  This review outlines ethical, legal, and practical issues related to conducting functional imaging research with Alzheimer's disease (AD) patients. Imaging techniques, with an emphasis on functional MRI and positron emission tomography, are compared and contrasted with respect to the manner in which they can be applied to issues of clinical relevance to AD. Methodological difficulties are raised to assist with critical evaluation of current imaging results. Various potential clinical applications of functional imaging are briefly reviewed and discussed with respect to associated ethical conflicts.

  View details for Web of Science ID 000180058100013

  View details for PubMedID 12480493

• On disentangling states versus traits: Demonstration of a new technique using the Alzheimer's disease assessment scale ALZHEIMER DISEASE & ASSOCIATED DISORDERS Taylor, J. L., Kraemer, H. C., Noda, A., Friedman, L., Zarcone, V., Tinklenberg, J. R., Yesavage, J. A. 2002; 16 (4): 254-260

  Abstract

  Part of the challenge in research on degenerative neurologic disease relates to distinguishing those measurements that essentially describe patient characteristics stable across the course of illness (traits) from those that vary systematically within subjects (states), particularly those specifically related to stage or duration of illness. A components-of-variance approach was used to examine the state versus trait aspects of the Alzheimer's Disease Assessment Scale (ADAS) Cognitive and Noncognitive subscales, a clinical instrument frequently used in research on Alzheimer disease. Subjects were 190 patients with probable AD followed longitudinally. Stage of illness was indexed by mental status scores. Analysis of variance was used to partition total variance into that associated with subjects (trait), stages (state: stage), subjects x stages (state: other), and error. ADAS Cognitive scores were strongly related to stage of illness (83% of true variance). ADAS Noncognitive scores were modestly related to stage (approximately 21% of true variance) and moderately related to state: other (47%). We discuss how state-trait analyses can be helpful in focusing attention on those areas of assessment most likely to accomplish specific objectives.

  View details for Web of Science ID 000179640800007

  View details for PubMedID 12468900

• Modeling the prevalence and incidence of Alzheimer's disease and mild cognitive impairment European Winter Conference on Brain Research Yesavage, J. A., O'Hara, R., Kraemer, H., Noda, A., Taylor, J. L., Ferris, S., Gely-Nargeot, M. C., Rosen, A., Friedman, L., Sheikh, J., Derouesne, C. PERGAMON-ELSEVIER SCIENCE LTD. 2002: 281–86

  Abstract

  A number of systems have been proposed for classifying older adults who suffer from cognitive impairment or decline but do not yet meet criteria for Alzheimer's disease (AD). The classification, Mild Cognitive Impairment (MCI), has attracted much attention. It uses relatively specific diagnostic criteria and individuals who meet these criteria appear to be at substantial risk for the development of AD. However, little data is available to define the prevalence of MCI in any age group. We propose a simple mathematical model for the progression of patients from Non-Affected (NA) to MCI to AD. This first-order Markov model defines the likely prevalence of MCI at specific ages. Primary assumptions of the model include an AD prevalence of 1% at age 60 increasing to 25% at age 85 and a conversion rate from MCI to AD of 10% constant across all ages considered. We used the best available information for our model and found (1) that the MCI prevalence increased from 1% at age 60 to 42% at age 85 and (2) that the conversion rate from NA to MCI increased from 1% per year at age 60 to 11% at age 85. In conclusion, this model allows estimation of prevalence of MCI and conversion from NA to MCI based upon known prevalences of AD, conversion rates of MCI to AD, and death rates. Due to its substantial prevalence, MCI may be an important target for screening and possible intervention.

  View details for Web of Science ID 000178254700002

  View details for PubMedID 12127595

• Interactive influences on BVRT performance level: geriatric considerations ARCHIVES OF CLINICAL NEUROPSYCHOLOGY Coman, E., Moses, J. A., Kraemer, H. C., Friedman, L., Benton, A. L., Yesavage, J. 2002; 17 (6): 595-610

  Abstract

  We examined the interactive influence of specific demographic and diagnostic variables on Benton Visual Retention Test (BVRT) performance in three commonly presenting groups of older adults. Cross-sectional data from three archival samples were utilized: "normals" (n=156), "normals with memory concerns" (n=435), and a "mixed neurologic" group (n=196). In both normal groups, as well as in a "no/low deficit" neurologic subgroup, we confirmed that the higher one's age, the lower their BVRT accuracy, while the higher one's level of education, the greater their BVRT accuracy (at least through age 84). For normal subjects, gender had no impact on BVRT performance. Variability in BVRT performance increased consistently, but not significantly, through age 85.

  View details for Web of Science ID 000178747900006

  View details for PubMedID 14591858

• Donepezil and flight simulator performance: Effects on retention of complex skills NEUROLOGY Yesavage, J. A., Mumenthaler, M. S., Taylor, J. L., Friedman, L., O'Hara, R., Sheikh, J., Tinklenberg, J., Whitehouse, P. J. 2002; 59 (1): 123-125

  Abstract

  We report a randomized, double-blind, parallel group, placebo-controlled study to test the effects of the acetylcholinesterase inhibitor, donepezil (5 mg/d for 30 days), on aircraft pilot performance in 18 licensed pilots with mean age of 52 years. After 30 days of treatment, the donepezil group showed greater ability to retain the capacity to perform a set of complex simulator tasks than the placebo group, p < 0.05. Donepezil appears to have beneficial effects on retention of training on complex aviation tasks in nondemented older adults.

  View details for Web of Science ID 000176622600025

  View details for PubMedID 12105320

• Sleep/wake cycle disturbance in Alzheimer's disease: How much is due to an inherent trait? INTERNATIONAL PSYCHOGERIATRICS Yesavage, J. A., Taylor, J. L., Kraemer, H., Noda, A., Friedman, L., Tinklenberg, J. R. 2002; 14 (1): 73-81

  Abstract

  Major advances in understanding the physiology and genetics of circadian rhythm in the past decade challenge the researcher of sleep/wake disorders in Alzheimer's disease (AD) to distinguish patient characteristics stable across the course of illness ("traits") from characteristics that vary with stage of illness ("states"). A components-of-variance approach with a repeated measures model was used to examine the between-subjects variance over time ("trait") vs. within-subjects ("state") variance in 42 patients with probable AD followed, on average, over 2 years on actigraphic sleep/wake measures. Mental status scores indexed stage of illness. Actigraphic measures of sleep efficiency and circadian rhythmicity appeared predominantly "trait," with between-individual differences accounting for over 55% of variance compared to the less than 5% of variance related to stage of cognitive impairment. We discuss how "state-trait" analyses can be helpful in identifying areas of assessment most likely to be fruitful objectives of physiologic and genetic research on sleep/wake disturbance in AD.

  View details for Web of Science ID 000176217400008

  View details for PubMedID 12094910

• How well are clinicians following dementia practice guidelines? ALZHEIMER DISEASE & ASSOCIATED DISORDERS Rosen, C. S., Chow, H. C., Greenbaum, M. A., Finney, J. F., Moos, R. H., Sheikh, J. I., Yesavage, J. A. 2002; 16 (1): 15-23

  Abstract

  Although there are numerous clinical guidelines regarding the management of dementia, there have been few studies on their implementation in practice. Clinicians in six United States Department of Veterans Affairs medical centers (n = 200, 85% response rate) were surveyed regarding their use of practices recommended in the California Workgroup Guidelines for Alzheimer's Disease Management. The majority of providers (89% to 73%) reported that they routinely conducted neurological examinations, obtained histories from caregivers, discussed the diagnosis with the patient's family, discussed durable power of attorney, and made legally-required reports of drivers with dementia. Roughly two-thirds of providers said they routinely conducted cognitive screening examinations, screened for depression, reported elder abuse, and discussed care needs and decision-making issues with patients' families. Only half of all outpatient providers implemented caregiver support practices for at least half of their patients. Clinicians' choices of medications for cognition, mood, and behavior problems were broadly consistent with current practice guidelines. These results suggest possible priorities for quality improvement efforts. Further research is needed to clarify reasons for particular gaps between guidelines and practice and to identify specific targets for intervention.

  View details for Web of Science ID 000174273000003

  View details for PubMedID 11882745

• Which Alzheimer patients are at risk for rapid cognitive decline? JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY O'Hara, R., Thompson, J. M., Kraemer, H. C., Fenn, C., Taylor, J. L., Ross, L., Yesavage, J. A., Bailey, A. M., Tinklenberg, J. R. 2002; 15 (4): 233-238

  Abstract

  In the current study of 1062 Alzheimer's disease (AD) patients, we employed receiver operating characteristic curve analysis to identify characteristics of patients at increased risk for rapid cognitive decline. The patients are participants at one of the nine Alzheimer's Disease Research Centers of California. Rapid decline was defined as a 3-point or greater loss on the Mini-Mental State Examination (MMSE) per year, post visit. The independent variables were age at clinic visit, age at symptom onset of AD, MMSE at patient visit, years of education, gender, ethnicity, living arrangement, presence of aphasia, delusions, hallucinations, and extrapyramidal signs. Receiver operating characteristic curve analysis indicated that AD patients presenting with moderate to severe aphasia, age at clinic visit of 75 years or less, and an MMSE greater than 7 were at increased risk for rapid cognitive decline. This information could help clinicians target these patients for pharmacologic interventions, facilitate long-term care planning, and potentially create savings by delaying or stabilizing the course of the disease.

  View details for Web of Science ID 000179584400009

  View details for PubMedID 12489920

• CSF hypocretin/orexin levels in narcolepsy and other neurological conditions NEUROLOGY Ripley, B., Overeem, S., Fujiki, N., Nevsimalova, S., Uchino, M., Yesavage, J., Di Monte, D., DOHI, K., Melberg, A., Lammers, G. J., Nishida, Y., Roelandse, F. W., Hungs, M., Mignot, E., Nishino, S. 2001; 57 (12): 2253-2258

  Abstract

  To examine the specificity of low CSF hypocretin-1 levels in narcolepsy and explore the potential role of hypocretins in other neurologic disorders.A method to measure hypocretin-1 in 100 microL of crude CSF sample was established and validated. CSF hypocretin-1 was measured in 42 narcolepsy patients (ages 16-70 years), 48 healthy controls (ages 22-77 years,) and 235 patients with various other neurologic conditions (ages 0-85 years).As previously reported, CSF hypocretin-1 levels were undetectably low (<100 pg/mL) in 37 of 42 narcolepsy subjects. Hypocretin-1 levels were detectable in all controls (224-653 pg/mL) and all neurologic patients (117-720 pg/mL), with the exception of three patients with Guillain-Barré syndrome (GBS). Hypocretin-1 was within the control range in most neurologic patients tested, including patients with AD, PD, and MS. Low but detectable levels (100-194 pg/mL) were found in a subset of patients with acute lymphocytic leukemia, intracranial tumors, craniocerebral trauma, CNS infections, and GBS.Undetectable CSF hypocretin-1 levels are highly specific to narcolepsy and rare cases of GBS. Measuring hypocretin-1 levels in the CSF of patients suspected of narcolepsy is a useful diagnostic procedure. Low hypocretin levels are also observed in a large range of neurologic conditions, most strikingly in subjects with head trauma. These alterations may reflect focal lesions in the hypothalamus, destruction of the blood brain barrier, or transient or chronic hypofunction of the hypothalamus. Future research in this area is needed to establish functional significance.

  View details for Web of Science ID 000172891500018

  View details for PubMedID 11756606

• Context processing in older adults: Evidence for a theory relating cognitive control to neurobiology in healthy aging 40th Annual Meeting of the Psychonomic-Society Braver, T. S., Barch, D. M., Keys, B. A., Carter, C. S., Cohen, J. D., Kaye, J. A., Janowsky, J. S., Taylor, S. F., Yesavage, J. A., Mumenthaler, M. S., Jagust, W. J., Reed, B. R. AMER PSYCHOLOGICAL ASSOC. 2001: 746–63

  Abstract

  A theory of cognitive aging is presented in which healthy older adults are hypothesized to suffer from disturbances in the processing of context that impair cognitive control function across multiple domains, including attention, inhibition, and working memory. These cognitive disturbances are postulated to be directly related to age-related decline in the function of the dopamine (DA) system in the prefrontal cortex (PFC). A connectionist computational model is described that implements specific mechanisms for the role of DA and PFC in context processing. The behavioral predictions of the model were tested in a large sample of older (N = 81) and young (N = 175) adults performing variants of a simple cognitive control task that placed differential demands on context processing. Older adults exhibited both performance decrements and, counterintuitively, performance improvements that are in close agreement with model predictions.

  View details for DOI 10.1037//0096-3445.130.4.746

  View details for Web of Science ID 000172286300009

  View details for PubMedID 11757878

• Therapeutic approaches to age-associated neurocognitive disorders. Dialogues in clinical neuroscience O'Hara, R., Derouesné, C., Fountoulakis, K. N., Yesavage, J. A. 2001; 3 (3): 191-213

  Abstract

  The United Nations projects that the number of individuals with dementia in developed countries alone will be approximately 36,7 million by the year 2050. International recognition of the significant emotional and economic burden of Alzheimer's disease has been matched by a dramatic increase in the development of pharmacological and nonpharmacological approaches to this illness in the past decade. Changing demographics have underscored the necessity to develop similar approaches for the remediation of the cognitive impairment associated with more benign syndromes, such as mild cognitive impairment (MCI) and age-associated cognitive decline (AACD). The present article aims to provide an overview of the most current therapeutic approaches to age-associated neurocognitive disorders. Additionally, it discusses the conceptual and methodological issues that surround the design, implementation, and interpretation of such approaches.

  View details for PubMedID 22033831

  View details for PubMedCentralID PMC3181653

• Influence of the menstrual cycle on flight simulator performance after alcohol ingestion JOURNAL OF STUDIES ON ALCOHOL Mumenthaler, M. S., O'Hara, R., Taylor, J. L., Friedman, L., Yesavage, J. A. 2001; 62 (4): 422-433

  Abstract

  Previous studies investigating the influence of the menstrual cycle on cognitive functioning of women after alcohol ingestion have obtained inconsistent results. The present study tested the hypothesis that flight simulator performance during acute alcohol intoxication and 8 hours after drinking differs between the menstrual and the luteal phase of the menstrual cycle.White female pilots (N = 24) were tested during the menstrual and the luteal phases of their menstrual cycles. On each test day they performed a baseline simulator flight, consumed 0.67 g/kg ethanol, and performed an acute-intoxication and an 8-hour-carryover simulator flight.Subjects reached highly significant increases in estradiol (E2) as well as progesterone (P) levels during the luteal test day. Yet, there were no significant differences in overall flight performance after alcohol ingestion between the menstrual and luteal phases during acute intoxication or at 8-hour carryover. We found no correlations between E, or P levels and overall flight performance. However, there was a statistically significant Phase x Order interaction: Pilots who started the experiment with their menstrual day were less susceptible to the effects of alcohol during the second test day than were pilots who started with their luteal day.The tested menstrual cycle phases and varying E2 and P levels did not significantly influence postdrink flight performance. Because the present study included a comparatively large sample size and because it involved complex "real world" tasks (piloting an aircraft), we believe that the present findings are important. We hope that our failure to detect menstrual cycle effects will encourage researchers to include women in their investigations of alcohol effects and human performance.

  View details for Web of Science ID 000170348900002

  View details for PubMedID 11523532

• Rate of cognitive decline in AD is accelerated by the interleukin-1 alpha-889*1 allele NEUROLOGY Murphy, G. M., Claassen, J. D., DeVoss, J. J., Pascoe, N., Taylor, J., Tinklenberg, J. R., Yesavage, J. A. 2001; 56 (11): 1595-1597

  Abstract

  The reason for differences in rate of cognitive decline in AD is unknown. The interleukin-1 alpha (IL-1 alpha) -889 *2 allele is associated with increased risk for AD. Surprisingly, in a sample of 114 patients followed for an average of 3.8 years, individuals homozygous for the IL-1 alpha -889 *1 allele declined significantly more rapidly on the Mini-Mental State Examination than did others. There was no difference in rate of decline between patients with and without the APOE epsilon 4 allele. These results support the hypothesis that inflammation is important in the clinical course of AD.

  View details for Web of Science ID 000169187100033

  View details for PubMedID 11402127

• Relationship between variations in estradiol and progesterone levels across the menstrual cycle and human performance PSYCHOPHARMACOLOGY Mumenthaler, M. S., O'Hara, R., Taylor, J. L., Friedman, L., Yesavage, J. A. 2001; 155 (2): 198-203

  Abstract

  Studies about whether or not the cognitive performance of women is influenced by changes in levels of sex steroid hormones across the menstrual cycle have produced ambiguous results.This study tested whether flight simulator performance differs significantly between the menstrual and the luteal phase of the menstrual cycle.In a within-subjects design, 24 female pilots were tested twice during their menstrual cycle: once during the menstrual and once during the luteal phase. On both test days they performed a 75-min simulator flight in a Frasca 141, a popular pilot training device.Despite highly significant differences in estradiol (E2) as well as progesterone (P) levels on the 2 test days, and despite excluding subjects with anovulatory cycles from the analyses, there were no significant differences in overall flight performance between the menstrual and luteal phases. We found no significant correlations between E2 or P levels and flight performance.We found no evidence that the tested menstrual cycle phases and their associated E2 and P levels significantly influence flight simulator performance. We consider these negative findings based on 24 subjects meaningful because previous studies on the influence of menstrual cycle on cognitive performance have not involved complex "real world" tasks such as piloting an aircraft and they obtained inconsistent results.

  View details for Web of Science ID 000168778000013

  View details for PubMedID 11401010

• One year of insulin-like growth factor I treatment does not affect bone density, body composition, or psychological measures in postmenopausal women JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM Friedlander, A. L., Butterfield, E., Moynihan, S., Grillo, J., Pollack, M., Holloway, L., Friedman, L., Yesavage, J., Matthias, D. F., Lee, S., Marcus, R., Hoffman, A. R. 2001; 86 (4): 1496-1503

  Abstract

  The activity of the hypothalamic-GH-insulin-like growth factor I (hypothalamic-GH-IGF-I) axis declines with age, and some of the catabolic changes of aging have been attributed to the somatopause. The purpose of this investigation was to determine the impact of 1 yr of IGF-I hormone replacement therapy on body composition, bone density, and psychological parameters in healthy, nonobese, postmenopausal women over 60 yr of age. Subjects (n = 16, 70.6 +/- 2.0 yr, 71.8 +/- 2.8 kg) were randomly assigned to either the self-injection IGF-I (15 microg/kg twice daily) or placebo group and were studied at baseline, at 6 months, and at 1 yr of treatment. There were no significant differences between the IGF-I and placebo groups in any of the measured variables at baseline. Fasting blood IGF-I levels were significantly elevated above baseline values (65.6 +/- 11.9 ng/mL) at 6 months (330.0 +/- 52.8) and 12 months (297.7 +/- 40.8) in the IGF-I treated group but did not change in the placebo subjects. Circulating levels of IGF-binding protein-1 and -3 were unaffected by the IGF-I treatment. Bone mineral density of the forearm, lumbar spine, hip, and whole body [as measured by dual-energy x-ray absorptiometry (DXA)] did not change in either group. Similarly, there was no difference in DXA-measured lean mass, fat mass, or percent body fat throughout the treatment intervention. Muscle strength values (grip, bench press, leg press), blood lipid parameters (cholesterol, high-density lipoprotein, low-density lipoprotein, triglycerides), and measures of postmeal glucose disposal were not altered by IGF-I treatment, although postmeal insulin levels were lower in the IGF-I subjects at 12 months. IGF-I did not affect bone turnover markers (osteocalcin and type I collagen N-teleopeptide), but subjects who were taking estrogen had significantly lower turnover markers than subjects who were not on estrogen at baseline, 6 months, and 12 months. Finally, the psychological measures of mood and memory were also not altered by the intervention. Despite the initial intent to recruit additional subjects, the study was discontinued after 16 subjects completed the protocol, because the preliminary analyses above indicated that no changes were occurring in any outcome variables, regardless of treatment regimen. Therefore, we conclude that 1 yr of IGF-I treatment, at a dose sufficient to elevate circulating IGF-I to young normal values, is not an effective means to alter body composition or blood parameters nor improve bone density, strength, mood, or memory in older women.

  View details for Web of Science ID 000168243000010

  View details for PubMedID 11297574

• Event-related brain potential evidence of spared knowledge in Alzheimer's disease PSYCHOLOGY AND AGING Ford, J. M., Askari, N., Gabrieli, J. D., Mathalon, D. H., Tinklenberg, J. R., Menon, V., Yesavage, J. 2001; 16 (1): 161-176

  Abstract

  The authors recorded event-related brain potentials (ERPs) to picture primes and word targets (picture-name verification task) in patients with Alzheimer's disease (AD) and in elderly and young participants. N400 was more negative to words that did not match pictures than to words that did match pictures in all groups: In the young, this effect was significant at all scalp sites; in the elderly, it was only at central-parietal sites; and in AD patients, it was limited to right central-parietal sites. Among AD patients pretested with a confrontation-naming task to identify pictures they could not name, neither the N400 priming effect nor its scalp distribution was affected by ability to name pictures correctly. This ERP evidence of spared knowledge of these items was complemented by 80% performance accuracy. Thus, although the name of an item may be inaccessible in confrontation naming, N400 shows that knowledge is intact enough to prime cortical responses.

  View details for DOI 10.1037//0882-7974.16.1.161

  View details for Web of Science ID 000171004800014

  View details for PubMedID 11302364

• Remote memory for public figures in Alzheimer's disease: Relationships to regional cortical and limbic brain volumes JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY Fama, R., Shear, P. K., Marsh, L., Yesavage, J. A., Tinklenberg, J. R., Lim, K. O., Pfefferbaum, A., Sullivan, E. V. 2001; 7 (3): 384-390

  Abstract

  This study examined the relationships between regional cortical and hippocampal brain volumes and components of remote memory (recall, recognition, sequencing, and photo naming of presidential candidates) in 13 individuals with Alzheimer's disease (AD). Recognition and sequencing of remote memory for public figures were associated with regional cortical volumes. Specifically, lower recognition and sequencing scores were associated with smaller parietal-occipital cortical volumes; poorer sequencing was also associated with smaller prefrontal cortical volumes. By contrast, poorer anterograde but not remote memory scores were correlated with smaller hippocampal volumes. Within the constraints of the brain regions measured, these findings highlight the importance of the posterior cortical areas for selective remote memory processes and provide support for the dissociation between cortically mediated remote memory and hippocampally mediated anterograde memory.

  View details for Web of Science ID 000168425100012

  View details for PubMedID 11311039

• Hearing impairment and serial word recall in older adults EXPERIMENTAL AGING RESEARCH Pearman, A., Friedman, L., Brooks, J. O., Yesavage, J. A. 2000; 26 (4): 383-391

  Abstract

  The objective of this work was to study the differences in performance on a nonauditory memory task between older volunteers with and without hearing impairment. The design was cross-sectional. Three-hundred-forty-four community-dwelling adults aged 55 to 93 years, who volunteered for a mnemonic training class served as participants. Participants' hearing was tested with a Maico MA-27 portable audiometer. The dependent measure was performance on a visually presented serial word recall test. Participants were also asked to report whether they had a problem with their hearing. Hearing impairment was associated with poor performance on a serial word recall task, even after controlling for age-related differences on that task. Hearing acuity appears to be related to serial word recall in older adults. Because auditory presentations were not involved, this relation raises the question of whether hearing loss may be concomitant with other changes that affect cognitive abilities.

  View details for Web of Science ID 000165086400008

  View details for PubMedID 11091943

• Ethanol pharmacokinetics in white women: Nonlinear model fitting versus zero-order elimination analyses ALCOHOLISM-CLINICAL AND EXPERIMENTAL RESEARCH Mumenthaler, M. S., Taylor, J. L., Yesavage, J. A. 2000; 24 (9): 1353-1362

  Abstract

  Studies have shown repeatedly that ethanol pharmacokinetics are not linear, yet most researchers still determine ethanol elimination by linear, zero-order kinetics. The goals of the present work were to: (1) fit four nonlinear pharmacokinetic models to mean breath alcohol concentration (BrAC)-time data of 27 women and determine the best-fit model; (2) fit the determined best-fit model to individual BrAC data and estimate the pharmacokinetic parameters; and (3) compare the method of nonlinear model fitting with the classical zero-order elimination method and determine in which cases the classical approach is justified.Twenty-seven healthy white women ingested four drinks (total of 0.67 g x kg(-1)) of ethanol on two test days. Approximately 24 breath ethanol samples (for pharmacokinetic analyses) and one blood sample (for hormonal markers) were taken per day. Pharmacokinetic model evaluation was based on the coefficient of variation, the weighted residual sum of squares, and the sequence of the weighted residuals. Because hormonal changes across the menstrual cycle did not significantly influence ethanol pharmacokinetics, data from the two test days were pooled.The best-fit model was a one-compartment open model with first-order absorption and sequential first-order elimination, followed by Michaelis-Menten elimination kinetics. Fitting this model to the individual BrAC data yielded mean ka = 0.062 hr(-1), Vd = 0.457 L x kg(-1), ke = 0.011 hr(-1), Vmax = 0.136 g x L(-1) x hr(-1), and Km = 0.096 g x L(-1). For the classical analyses, mean time to peak BrAC = 1.83 hr, disappearance rate = 0.179 g x L(-1) x hr(-1), and area under the blood ethanol-time curve (AUC) = 2.884 g x L(-1) x hr. Correlational analyses showed that more frequent drinkers eliminated ethanol significantly faster and reached significantly lower AUC than less frequent drinkers.After multiple dose ingestion in white women, classical zero-order elimination analyses can be applied only to a limited portion of the descending BrAC-time curve. They seem justified and practical from 0.5 hr after peak BrAC until BrAC reaches 0.2 g x L(-1). To describe ethanol pharmacokinetics across the entire BrAC-time curve, however, sophisticated nonlinear model fitting is required.

  View details for Web of Science ID 000089364800005

  View details for PubMedID 11003200

• A retrospective chart review of gabapentin for the treatment of aggressive and agitated behavior in patients with dementias AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY Hawkins, J. W., Tinklenberg, J. R., Sheikh, J. I., PEYSER, C. E., Yesavage, J. A. 2000; 8 (3): 221-225

  Abstract

  In a 24-patient case series from retrospective chart review, the authors examined the use of gabapentin for the treatment of aggressive and agitated behaviors in nursing home patients with a DSM-IV diagnosis of dementia. On Clinical Global Rating Scale scores, 17 of 22 patients were much or greatly improved; 4 were minimally improved; and only 1 remained unchanged. Two of the 24 patients discontinued use of the medication because of excessive sedation. No other significant side effects were noted in treatment lasting up to 2 years.

  View details for Web of Science ID 000088230700007

  View details for PubMedID 10910420

• A longitudinal study of Apolipoprotein-E genotype and depressive symptoms in community-dwelling older adults AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY Mauricio, M., O'Hara, R., Yesavage, J. A., FRIEDMAN, E., Kraemer, H. C., Van de Water, M., Murphy, G. M. 2000; 8 (3): 196-200

  Abstract

  The Apolipoprotein-E (APOE) epsilon 4 allele is a risk factor for Alzheimer's disease (AD) and cognitive decline in older adults. Depression may also be a risk factor for dementia, and depression is important in the differential diagnosis of dementia. The authors performed a 5-year longitudinal study of APOE genotype and change in Geriatric Depression Scale scores in 113 community-dwelling older adults. No association was observed between APOE genotype and change in depressive symptoms. These results do not support the hypothesis that the APOE epsilon 4 allele is associated with depression. Important objections have been raised to APOE genotyping in the diagnosis of AD. However, the specificity of APOE genotyping in AD diagnosis would not appear to be compromised by an association with depression.

  View details for Web of Science ID 000088230700003

  View details for PubMedID 10910416

• Combined assessment of tau and neuronal thread protein in Alzheimer's disease CSF NEUROLOGY Kahle, P. J., Jakowec, M., Teipel, S. J., Hampel, H., Petzinger, G. M., Di Monte, D. A., Silverberg, G. D., Moller, H. J., Yesavage, J. A., Tinklenberg, J. R., Shooter, E. M., Murphy, G. M. 2000; 54 (7): 1498-1504

  Abstract

  Comparative study of CSF levels of tau and AD7C-neuronal thread protein (NTP) in patients with AD and control subjects.AD is characterized by neurofibrillary tangles composed of the abnormally hyperphosphorylated microtubule-associated protein tau. AD7C-NTP is a proposed AD marker expressed at early stages of neurofibrillary degeneration.Enzyme-linked immunosorbent assays specific for tau and AD7C-NTP. CSF samples were obtained from 35 demented patients (25 with antemortem clinical diagnosis of probable AD, 5 with neuropathologic diagnosis of definite AD, 5 with Lewy body pathology), 29 nondemented patients with PD, and 16 elderly healthy control subjects. Receiver operating characteristics (ROC) and multivariate discriminant analysis for AD versus controls. Correlational analysis of CSF tau and AD7C-NTP and of each marker with Mini-Mental State Examination (MMSE) scores was performed.Levels of both tau and AD7C-NTP were significantly elevated in the AD patients compared with control subjects. ROC analysis showed that CSF tau distinguished between patients with AD and nondemented control subjects with 63% sensitivity and 89% specificity, AD7C-NTP with 70% sensitivity and 87% specificity. Combined evaluation of both markers with discriminant analysis raised the specificity to 93% at a 63% sensitivity level. Both markers positively correlated with each other within the AD group, but not among control subjects. CSF levels of AD7C-NTP, but not of tau, showed a small but significant inverse correlation (r = -0.43) with MMSE scores of AD patients.CSF levels of tau and AD7C-NTP may be useful biomarkers for AD.

  View details for Web of Science ID 000086460900021

  View details for PubMedID 10751266

• Relationship of CogScreen-AE to flight simulator performance and pilot age AVIATION SPACE AND ENVIRONMENTAL MEDICINE Taylor, J. L., O'Hara, R., Mumenthaler, M. S., Yesavage, J. A. 2000; 71 (4): 373-380

  Abstract

  We report on the relationship between CogScreen-Aeromedical Edition (AE) factor scores and flight simulator performance in aircraft pilots aged 50-69.Some 100 licensed, civilian aviators (average age 58+/-5.3 yr) performed aviation tasks in a Frasca model 141 flight simulator and the CogScreen-AE battery. The aviation performance indices were: a) staying on course; b) dialing in communication frequencies; c) avoiding conflicting traffic; d) monitoring cockpit instruments; e) executing the approach; and f) a summary score, which was the mean of these scores. The CogScreen predictors were based on a factor structure reported by Kay (11), which comprised 28 CogScreen scores. Through principal components analysis of Kay's nine factors, we reduced the number of predictors to five composite CogScreen scores: Speed/Working Memory (WM), Visual Associative Memory, Motor Coordination, Tracking, and Attribute Identification.Speed/WM scores had the highest correlation with the flight summary score, Spearman r(rho) = 0.57. A stepwise-forward multiple regression analysis indicated that four CogScreen variables could explain 45% of the variance in flight summary scores. Significant predictors, in order of entry, were: Speed/WM, Visual Associative Memory, Motor Coordination, and Tracking (p<0.05). Pilot age was found to significantly improve prediction beyond that which could be predicted by the four cognitive variables. In addition, there was some evidence for specific ability relationships between certain flight component scores and CogScreen scores, such as approach performance and tracking errors.These data support the validity of CogScreen-AE as a cognitive battery that taps skills relevant to piloting.

  View details for Web of Science ID 000086061300002

  View details for PubMedID 10766461

• Extent, pattern, and correlates of remote memory impairment in Alzheimer's disease and Parkinson's disease Annual Meeting of the International-Neuropsychological-Society Fama, R., Sullivan, E. V., Shear, P. K., Stein, M., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. AMER PSYCHOLOGICAL ASSOC. 2000: 265–76

  Abstract

  Content and contextual memory for remote public figures and events was assessed with a modified version of the Presidents Test in patients with Alzheimer's disease (AD) or Parkinson's disease (PD). Contributions of executive functioning, semantic memory, and explicit anterograde memory to remote memory abilities were also examined. The AD group had temporally extensive deficits in content and contextual remote memory not accountable for by dementia severity. The PD group did not differ from the control group in remote memory, despite anterograde memory impairment. These results support the position that different component processes characterize remote memory, various mnemonic and nonmnemonic cognitive processes contribute to remote memory performance, and anterograde and remote memory processes are dissociable and differentially disrupted by neurodegenerative disease.

  View details for DOI 10.1037//0894-4105.14.2.265

  View details for Web of Science ID 000087480700010

  View details for PubMedID 10791866

• An actigraphic comparison of sleep restriction and sleep hygiene treatments for insomnia in older adults JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Friedman, L., Benson, K., Noda, A., Zarcone, V., Wicks, D. A., O'Connell, K., Brooks, J. O., Bliwise, D. L., Yesavage, J. A. 2000; 13 (1): 17-27

  Abstract

  We compared the efficacy of sleep restriction therapy combined with sleep hygiene, nap modification of sleep restriction therapy combined with sleep hygiene, and sleep hygiene alone as treatments for insomnia in 39 community-dwelling men and women 55 years and older. We used the wrist actigraph as an objective outcome measure for all subjects at baseline, end of treatment, and 3-month follow-up; polysomnography (PSG) was conducted in a subgroup of subjects. Although subjects appeared to follow restriction instructions through follow-up, we found few between-group differences in treatment efficacy. Lack of treatment effect might be explained by the efficacy of HYG as a treatment in itself and the relatively low symptom level in these healthy older poor sleepers. At baseline, actigraphic results were found to correlate more highly than sleep log data with PSG in our sample. Actigraphic total sleep time, in particular, was highly correlated with PSG.

  View details for Web of Science ID 000085979100003

  View details for PubMedID 10753003

• Update on Alzheimer's disease: recent findings and treatments WESTERN JOURNAL OF MEDICINE O'Hara, R., Mumenthaler, M. S., Yesavage, J. A. 2000; 172 (2): 115-120

  View details for Web of Science ID 000085217100020

  View details for PubMedID 10693374

• How can we learn about developmental processes from cross-sectional studies, or can we? AMERICAN JOURNAL OF PSYCHIATRY Kraemer, H. C., Yesavage, J. A., Taylor, J. L., Kupfer, D. 2000; 157 (2): 163-171

  Abstract

  Cross-sectional studies are often used in psychiatric research as a basis of longitudinal inferences about developmental or disease processes. While the limitations of such usage are often acknowledged, these are often understated. The authors describe how such inferences are often, and sometimes seriously, misleading.Why and how these inferences mislead are here demonstrated on an intuitive level, by using simulated data inspired by real problems in psychiatric research.Four factors with major roles in the relationship between cross-sectional studies and longitudinal inferences are selection of time scale, type of developmental process studied, reliability of measurement, and clarity of terminology. The authors suggest how to recognize inferential errors when they occur, describe how to protect against such errors in future research, and delineate the circumstances in which only longitudinal studies can answer crucial questions.The simple conclusion is that one must always use the results of cross-sectional studies to draw inferences about longitudinal processes with trepidation.

  View details for Web of Science ID 000085169000003

  View details for PubMedID 10671382

• alpha 2 macroglobulin and the risk of Alzheimer's disease NEUROLOGY Dodel, R. C., Du, Y., Bales, K. R., Gao, F., Eastwood, B., Glazier, B., Zimmer, R., Cordell, B., Hake, A., Evans, R., Gallagher-Thompson, D., Thompson, L. W., Tinklenberg, J. R., Pfefferbaum, A., SULLIVAN, E. V., Yesavage, J., Altstiel, L., Gasser, T., Farlow, M. R., Murphy, G. M., Paul, S. M. 2000; 54 (2): 438-442

  Abstract

  alpha2 Macroglobulin is a panproteinase inhibitor that is found immunohistochemically in neuritic plaques, a requisite neuropathologic feature of AD. Recently, a pentanucleotide deletion near the 5' end of the "bait region" of the alpha2 macroglobulin (A2M) gene was reported to be associated with AD in a large cohort of sibpairs, in which the mutation conferred a similar odds ratio with AD as the APOE-epsilon4 allele for carriers of at least one copy of the A2M gene (Mantel-Haenszel odds ratio, 3.56).We studied three independent association samples of AD patients (n = 309) with an age range of 50 to 94 years and representative controls (n = 281) to characterize the allele frequency of the pentanucleotide deletion in this cohort. We detected the mutation near the 5' splice site of exon 18 using standard PCR and restriction fragment length polymorphism methods. The results were adjusted for age, gender, education, and APOE polymorphism.We found that the A2M gene polymorphism conferred an increased risk for AD, with an estimated Mantel-Haenszel ratio of 1.5 (95% CI 1.1 to 2.2; p = 0.025). There was no age- or gender-dependent increase in A2M gene allele frequencies in AD patients compared with controls. The combined sample showed the expected association between AD and APOE-epsilon 4. In one of our three samples there was an interaction between the A2M and APOE-epsilon4 genes, but the other two samples showed no interaction between the two risk factors.Our data support an association between the A2M gene and AD. This association is less pronounced, however, in our cohort than in the previously reported sample of sibpairs.

  View details for Web of Science ID 000085043800030

  View details for PubMedID 10668709

• Structural brain correlates of verbal and nonverbal fluency measures in Alzheimer's disease 26th Annual Meeting of the International-Neuropsychological-Society Fama, R., Sullivan, E. V., Shear, P. K., Cahn-Weiner, D. A., Marsh, L., Lim, K. O., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. AMER PSYCHOLOGICAL ASSOC. 2000: 29–40

  Abstract

  This study examined the relationships between regional brain volumes and semantic, phonological, and nonverbal fluency in 32 participants with Alzheimer's disease (AD). Object but not animal semantic fluency correlated with frontal and temporal gray matter volumes. Phonological fluency was not significantly associated with any brain volume examined. Nonverbal fluency was selectively associated with bilateral frontal gray matter volumes. Hippocampal volumes, although markedly reduced in these patients, were not related to any of the fluency measures. Results lend evidence to the importance of the frontal lobes in the directed generation of nonverbal and verbal exemplars by AD patients. Furthermore, both left- and right-hemisphere regions contribute to the generation of verbal and nonverbal exemplars.

  View details for Web of Science ID 000085020000003

  View details for PubMedID 10674796

• Convergent behavioral and neuropsychological evidence for a distinction between identification and production forms of repetition priming JOURNAL OF EXPERIMENTAL PSYCHOLOGY-GENERAL Gabrieli, J. D., Vaidya, C. J., Stone, M., Francis, W. S., Thompson-Schill, S. L., Fleischman, D. A., Tinklenberg, J. R., Yesavage, J. A., Wilson, R. S. 1999; 128 (4): 479-498

  Abstract

  Four experiments examined a distinction between kinds of repetition priming which involve either the identification of the form or meaning of a stimulus or the production of a response on the basis of a cue. Patients with Alzheimer's disease had intact priming on picture-naming and category-exemplar identification tasks and impaired priming on word-stem completion and category-exemplar production tasks. Division of study-phase attention in healthy participants reduced priming on word-stem completion and category-exemplar production tasks but not on picture-naming and category-exemplar identification tasks. The parallel dissociations in normal and abnormal memory cannot be explained by implicit-explicit or perceptual-conceptual distinctions but are explained by an identification-production distinction. There may be separable cognitive and neural bases for implicit modulation of identification and production forms of knowledge.

  View details for Web of Science ID 000084711800004

  View details for PubMedID 10650584

• Dissociation between two forms of conceptual priming in Alzheimer's disease NEUROPSYCHOLOGY Vaidya, C. J., Gabrieli, J. D., Monti, L. A., Tinklenberg, J. R., Yesavage, J. A. 1999; 13 (4): 516-524

  Abstract

  Patients with Alzheimer's disease (AD) and healthy control participants performed 2 conceptual repetition priming tasks, word-associate production and category-exemplar production. Both tasks had identical study-phases of reading target words aloud, had the most common responses as target items, and required production of a single response. Patients with AD showed normal priming on word-associate production but impaired priming on category-exemplar production. This dissociation in AD suggests that conceptual priming is not a unitary form of memory but rather is mediated by separable memory systems.

  View details for Web of Science ID 000083035700005

  View details for PubMedID 10527059

• Brain structural and cognitive correlates of clock drawing performance in Alzheimer's disease 26th Annual Meeting of the International-Neuropsychological-Society Cahn-Weiner, D. A., SULLIVAN, E. V., Shear, P. K., Fama, R., Lim, K. O., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. CAMBRIDGE UNIV PRESS. 1999: 502–9

  Abstract

  The Clock Drawing Test (CDT) is widely used in the assessment of dementia and is known to be sensitive to the detection of deficits in neurodegenerative disorders such as Alzheimer's disease (AD). CDT performance is dependent not only on visuospatial and constructional abilities, but also on conceptual and executive functioning; therefore, it is likely to be mediated by multiple brain regions. The purpose of the present study was to identify component cognitive processes and regional cortical volumes that contribute to CDT performance in AD. In 29 patients with probable AD, CDT performance was significantly related to right-, but not left-hemisphere, regional gray matter volume. Specifically, CDT score correlated significantly with the right anterior and posterior superior temporal lobe volumes. CDT scores showed significant relationships with tests of semantic knowledge, executive function, and visuoconstruction, and receptive language. These results suggest that in AD patients, CDT performance is attributable to impairment in multiple cognitive domains but is related specifically to regional volume loss of right temporal cortex.

  View details for Web of Science ID 000083339700003

  View details for PubMedID 10561930

• Predicting response of older adults to mnemonic training: who will benefit? International psychogeriatrics MCKITRICK, L. A., Friedman, L. F., Brooks, J. O., Pearman, A., Kraemer, H. C., Yesavage, J. A. 1999; 11 (3): 289-300

  Abstract

  To identify profiles of subjects who respond to mnemonic training for serial word and proper name recall.Analysis of J. O. Brooks et al.'s (1999) mnemonic training data using Quality Receiver Operating Characteristic (QROC) and longitudinal regression analyses (LRA).Community.224 community-dwelling adults 55 years of age and older who wished to improve their memory.Performance on serial word and proper name tests; performance on cognitive ability tests.Although the QROC and LRA identified several common predictors (baseline performance, mental rotation ability, and paired associate learning), the QROC identified additional predictors and cognitive ability profiles associated with successful response.Similar degrees of response to mnemonic training are associated with heterogeneous cognitive profiles. This finding highlights the fact that participants rely on a variety of abilities to derive benefit from mnemonic training and thus suggests different avenues from which to approach this training.

  View details for PubMedID 10547129

• Relationship of age and simulated flight performance JOURNAL OF THE AMERICAN GERIATRICS SOCIETY Yesavage, J. A., Taylor, J. L., Mumenthaler, M. S., Noda, A., O'Hara, R. 1999; 47 (7): 819-823

  Abstract

  To determine the relationship between age and aviator performance on a flight simulator.A cross-sectional observational study.The sample consisted of 100 aviators aged 50 to 69 (mean = 58).Pilots were tested on a Frasca 141 flight simulator (Urbana, IL), linked to a UNIX-based IRIS 4D computer (Silicon Graphics, Mountain View, CA), which both generated graphics of the environment in which the pilots flew and collected data concerning the aircraft's flight conditions.We found that increased age was significantly associated with decreased aviator performance on a flight simulator.Although there was a significant relationship between increased age and decreased aviator performance, age explained 22% or less of the variance of performance on different flight tasks; hence, other factors are also important in explaining the performance of older pilots.

  View details for Web of Science ID 000081323400007

  View details for PubMedID 10404925

• Taking account of between-patient variability when modeling decline in Alzheimer's disease AMERICAN JOURNAL OF EPIDEMIOLOGY Joseph, L., Wolfson, D. B., Belisle, P., Brooks, J. O., Mortimer, J. A., Tinklenberg, J. R., Yesavage, J. A. 1999; 149 (10): 963-973

  Abstract

  The pattern of deterioration in patients with Alzheimer's disease is highly variable within a given population. With recent speculation that the apolipoprotein E allele may influence rate of decline and claims that certain drugs may slow the course of the disease, there is a compelling need for sound statistical methodology to address these questions. Current statistical methods for describing decline do not adequately take into account between-patient variability and possible floor and/or ceiling effects in the scale measuring decline, and they fail to allow for uncertainty in disease onset. In this paper, the authors analyze longitudinal Mini-Mental State Examination scores from two groups of Alzheimer's disease subjects from Palo Alto, California, and Minneapolis, Minnesota, in 1981-1993 and 1986-1988, respectively. A Bayesian hierarchical model is introduced as an elegant means of simultaneously overcoming all of the difficulties referred to above.

  View details for Web of Science ID 000080305200010

  View details for PubMedID 10342806

• Mnemonic training in older adults: effects of age, length of training, and type of cognitive pretraining. International psychogeriatrics Brooks, J. O., Friedman, L., Pearman, A. M., Gray, C., Yesavage, J. A. 1999; 11 (1): 75-84

  Abstract

  To improve performance with mnemonic techniques for remembering words and proper names.For word recall, a 2 x 2 factorial in which type of pretraining and length of training were between-subjects manipulations. For proper name recall, a two-group design in which type of pretraining was manipulated between subjects.Community.268 community-dwelling adults over the age of 55 years who wished to improve their memory.Recall of words and proper names both before and after training in mnemonics.Participants received a 2-week training course on two mnemonic techniques, the method of loci for words and a name association technique for proper names.There was no effect of the pretraining manipulation on proper name recall. For word recall, however, a multiple regression that included age indicated that the older-old participants benefited more from a combination of comprehensive pretraining and extended mnemonic training than did the younger-old.Increased training time coupled with a comprehensive pretraining regimen can improve the performance of the older-old in using mnemonics; this improved performance cannot be attributed solely to enhanced knowledge of the mnemonic.

  View details for PubMedID 10189601

• How to drastically reduce priming in word stem completion and still present the words MEMORY & COGNITION Brooks, J. O., Gibson, J. M., Friedman, L., Yesavage, J. A. 1999; 27 (2): 208-219

  Abstract

  This paper describes a series of experiments in which we demonstrated that "dysphonemic" word stems, which are likely not pronounced in isolation as they are within a word (e.g., MUS in MUSHROOM or LEG in LEGEND), showed less priming than did "phonemic stems" (e.g., MUS in MUSTARD or LEG in LEGACY). Furthermore, words with either dysphonemic or phonemic three-letter stems gave rise to equivalent levels of priming when test cues were four-letter stems (LEGE) or word fragments (L_G_ND). Moreover, the difference between phonemic and dysphonemic stems persisted when nonpresented completion rates were matched. A final cued-recall experiment revealed that performance was greater for phonemic stems than for dysphonemic stems and that this difference was greater for older participants than for younger ones. These results are not readily accounted for by extant theoretical approaches and point to important methodological issues regarding stem completion.

  View details for Web of Science ID 000079821600002

  View details for PubMedID 10226432

• Geriatric performance on the Benton visual retention test: demographic and diagnostic considerations CLINICAL NEUROPSYCHOLOGIST Coman, E., Moses, J. A., Kraemer, H. C., Friedman, L., Benton, A. L., Yesavage, J. 1999; 13 (1): 66-77

  Abstract

  We examined relationships between demographic and diagnostic variables and Benton Visual Retention Test performance in older adults aged 55 to 97 years. We derived extended geriatric norms for BVRT total number correct scores adjusted for variables that contributed significantly to the variance. We also investigated BVRT performance in two commonly presenting diagnostic groups: (1) normal adults with memory concerns, and (2) a group with mixed neurologic disorders. Age and education but not gender were significantly associated with BVRT performance in both normals and normals with memory concerns. Level of cognitive deficit was a moderating factor in that age and education also contributed significantly to the BVRT performance of no/low deficit neurologic patients but had no impact in patients whose cognitive deficits were moderate/severe.

  View details for Web of Science ID 000082002000007

  View details for PubMedID 10937649

• Effects of menstrual cycle and female sex steroids on ethanol pharmacokinetics ALCOHOLISM-CLINICAL AND EXPERIMENTAL RESEARCH Mumenthaler, M. S., Taylor, J. L., O'Hara, R., Fisch, H. U., Yesavage, J. A. 1999; 23 (2): 250-255

  Abstract

  This study investigated the influence of menstrual cycle and female sex steroid levels on ethanol pharmacokinetics. In a within-subjects design, 24 female volunteers each consumed 0.67 g x kg(-1) ethanol during the menstrual and luteal phases of their menstrual cycle. On each test day, we collected blood samples before ethanol administration to determine estradiol (E2) and progesterone (P) levels and to confirm ovulation. We took 20 or more postdrink breath ethanol concentration readings and examined pharmacokinetic differences between the two phases, using classical pharmacokinetic measures, as well as Michaelis-Menten measures. Despite highly significant differences in measured E2 as well as P levels on the 2 test days, and despite excluding subjects with anovulatory cycles from the analysis, there were no significant differences between menstrual and luteal phases for any of the pharmacokinetic variables. We found no correlation between E2 or P levels and any of the pharmacokinetic measures. In summary, we found no evidence that the tested menstrual cycle phases or varying E2 and progesterone levels significantly influence ethanol pharmacokinetics. Because previous studies about the topic have used few subjects and revealed controversial results, we consider our negative findings based on 24 subjects meaningful.

  View details for Web of Science ID 000078678700009

  View details for PubMedID 10069553

• Gender differences in moderate drinking effects ALCOHOL RESEARCH & HEALTH Mumenthaler, M. S., Taylor, J. L., O'Hara, R., Yesavage, J. A. 1999; 23 (1): 55-?

  Abstract

  Women appear to become more impaired than men after drinking equivalent amounts of alcohol, achieving higher blood alcohol concentrations even when doses are adjusted for body weight. This finding may be attributable in part to gender differences in total body water content. Men and women appear to eliminate approximately the same total amount of alcohol per unit body weight per hour. However, women seem to eliminate significantly more alcohol per unit of lean body mass per hour than men. Some studies report that women are more susceptible than men to alcohol-related impairment of cognitive performance, especially in tasks involving delayed memory or divided attention functions. Psychomotor performance impairment, however, does not appear to be affected by gender. This article provides an overview of alcohol metabolism (pharmacokinetics) and reviews recent studies on gender differences in alcohol absorption, distribution, elimination, and impairment. Speculation that gender differences in alcohol pharmacokinetics or alcohol-induced performance impairment may be caused by the menstrual cycle and variations in female sex hormones are discussed. It is concluded that the menstrual cycle is unlikely to influence alcohol pharmacokinetics.

  View details for Web of Science ID 000084105600008

  View details for PubMedID 10890798

• The APOE epsilon 4 allele is associated with decline on delayed recall performance in community-dwelling older adults JOURNAL OF THE AMERICAN GERIATRICS SOCIETY O'Hara, R., Yesavage, J. A., Kraemer, H. C., Mauricio, M., Friedman, L. F., Murphy, G. M. 1998; 46 (12): 1493-1498

  Abstract

  This study investigated whether the Apolipoprotein (APOE) epsilon4 allele was associated with cognitive decline in community-dwelling older adults.Longitudinal cognitive performance of older adults with the epsilon3/epsilon4 genotype was compared with that of older adults with the epsilon3/epsilon3 genotype.Aging Clinical Research Center, Stanford University.One hundred community-dwelling older adults were recruited from a pool of 531 individuals who had participated in a memory training study 4 to 5 years earlier. These individuals were concerned about their memory functioning and were recruited through newspaper advertisements and contacts with local senior centers. The 100 individuals who agreed to participate in the follow-up investigation were between 59 and 95 years of age.At both baseline and follow-up, subjects were administered a battery of seven cognitive tests that examined verbal and spatial memory, attention, speed-of-processing, and language abilities. APOE genotype was determined at follow-up.Individuals with the epsilon3/epsilon4 APOE genotype were significantly younger than individuals with the APOE epsilon3/epsilon3 genotype. No significant differences were observed between the two groups on measures of attention, speed-of-processing, vocabulary, immediate verbal memory, and immediate spatial memory. However, those older adults with the epsilon3/epsilon4 genotype exhibited significantly greater decline in performance on delayed recall of verbal material than did those with the epsilon3/epsilon3 APOE genotype.These findings are consistent with previous studies, which suggest that the APOE epsilon4 allele predicts decline on measures of delayed recall.

  View details for Web of Science ID 000077358700001

  View details for PubMedID 9848808

• The stages of Alzheimer's disease: A reappraisal DEMENTIA AND GERIATRIC COGNITIVE DISORDERS Kraemer, H. C., Taylor, J. L., Tinklenberg, J. R., Yesavage, J. A. 1998; 9 (6): 299-308

  Abstract

  'Stages', as used in clinical practice and research, are defined, their value described, and criteria are proposed for their evaluation. The specific interest is in staging Alzheimer's disease (AD). Two staging systems, one based on the Global Deterioration Scale (GDS) and one based on the Mini-Mental State Exam (MMSE), are compared in terms of these criteria, as an illustration of the process involved. We propose that there is not one unique staging system, that different staging criteria might be appropriate to different research or clinical needs, depending on which part of the temporal course of the disease is of primary interest, and on whether the focus is on cognitive, functional, neurological, behavioral, economic, or other issues. GDS staging seems a better choice for the later stages of AD when the focus is on functional change. MMSE staging seems a better choice for tracking the earlier stages of AD when the focus is on cognitive change.

  View details for Web of Science ID 000076711600001

  View details for PubMedID 9769442

• Fluency performance patterns in Alzheimer's disease and Parkinson's disease CLINICAL NEUROPSYCHOLOGIST Fama, R., Sullivan, E. V., Shear, P. K., Cahn-Weiner, D. A., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. 1998; 12 (4): 487-499

  View details for Web of Science ID 000080699400005

• Influence of nicotine on simulator flight performance in non smokers PSYCHOPHARMACOLOGY Mumenthaler, M. S., Taylor, J. L., O'Hara, R., Yesavage, J. A. 1998; 140 (1): 38-41

  Abstract

  In a placebo-controlled study, we investigated the influence of nicotine on late-day aviation performance in 15 non-smoking subjects. In a within-subjects design, subjects were tested on 2 days, each lasting 8 h and consisting of three 75-min simulator flights (late-afternoon practice, evening test, night test). Prior to each test, subjects received either nicotine polacrilex 2 mg or placebo gum. As expected, overall performance was significantly better after nicotine, compared to placebo (P < 0.01). Post-hoc analysis of individual flight tasks showed that nicotine improved scores on approach to landing, a task which appears to require sustained attention. We conclude that nicotine may improve late-day flight performance in non-smoking aviators.

  View details for Web of Science ID 000077151700005

  View details for PubMedID 9862400

• Everyday problem solving among individuals with Alzheimer's disease GERONTOLOGIST Willis, S. L., Allen-Burge, R., Dolan, M. M., Bertrand, R. M., Yesavage, J., Taylor, J. L. 1998; 38 (5): 569-577

  Abstract

  Loss of functioning on complex tasks of daily living is an early indicator of dementia. The performance of 65 older adults with mild to moderate levels of Alzheimer's disease was examined on the Everyday Problems Test for the Cognitively Challenged Elderly (EPCCE), self-report inventories of functional performance, and a broad battery of clinical and neuropsychological measures. The EPCCE was designed to assess older adults on a set of complex tasks of daily living that involved not only global cognitive processes, but also higher-order executive functions. Participants solved an average of 45% of EPCCE tasks with significant differences in scores by disease severity. Performance was significantly related to global cognitive functioning and disease severity, and in particular to executive functions. Significant additional variance was accounted for by these executive functions beyond the variance accounted for by global cognitive measures.

  View details for Web of Science ID 000076643900005

  View details for PubMedID 9803645

• Preserved priming across study-test picture transformations in patients with Alzheimer's disease NEUROPSYCHOLOGY Park, S. M., Gabrieli, J. D., Reminger, S. L., Monti, L. A., Fleischman, D. A., Wilson, R. S., Tinklenberg, J. R., Yesavage, J. A. 1998; 12 (3): 340-352

  Abstract

  Picture-naming priming was examined across different study-test transformations to explore the nature of memory representations of objects supporting implicit memory processes in patients with Alzheimer's disease (AD). Although severely impaired in explicit memory for pictures and words, AD patients demonstrated normal priming across perceptual transformations in picture orientation (Experiment 1) and picture size (Experiment 2) and across symbolic transformations from words to pictures (Experiment 3). In addition, the priming across alterations in picture size was invariant. This demonstrates that AD patients have preserved implicit memory for high-level, abstract representations of objects.

  View details for Web of Science ID 000074744800002

  View details for PubMedID 9673992

• Acetyl L-carnitine slows decline in younger patients with Alzheimer's disease: a reanalysis of a double-blind, placebo-controlled study using the trilinear approach. International psychogeriatrics Brooks, J. O., Yesavage, J. A., Carta, A., Bravi, D. 1998; 10 (2): 193-203

  Abstract

  To assess the longitudinal effects of acety-L-carnitine (ALC) on patients diagnosed with Alzheimer's disease.Longitudinal, double-blind, parallel-group, placebo-controlled.Twenty-four outpatient sites across the United States.A total of 334 subjects diagnosed with probable Alzheimer's disease by NINCDS-ADRDA criteria. These data were originally reported by Thal and colleagues (1996).Cognitive subscale of the Alzheimer Disease Assessment Scale (ADAS) given every 3 months for 1 year.The average rate of change was estimated using the trilinear approach, which allows for periods of both change and stability. Both the ALC group and the placebo group exhibited the same mean rate of change on the ADAS (0.68 points/month). However, a multiple regression analysis revealed a statistically significant Age x Drug interaction characterized by younger subjects benefiting more from ALC, significant, cutpoint for ALC benefit was 61 years of age.ALC slows the progression of Alzheimer's disease in younger subjects, and the use of the trilinear approach to estimate the average rate of change may prove valuable in pharmacological trials.

  View details for PubMedID 9677506

• Effects of human growth hormone, insulin-like growth factor I, and diet and exercise on body composition of obese postmenopausal women JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM Thompson, J. L., Butterfield, G. E., Gylfadottir, U. K., Yesavage, J., Marcus, R., Hintz, R. L., Pearman, A., Hoffman, A. R. 1998; 83 (5): 1477-1484

  Abstract

  To determine the effects of GH and insulin-like growth factor I (IGF-I) administration, diet, and exercise on weight loss, body composition, basal metabolic rate (BMR), muscle strength, and psychological status, 33 moderately obese postmenopausal women (67.1 +/- 5.2 yr) participated in a 12-week randomized, double blind study. Participants were placed on a diet that provided 500 Cal/day less than that needed for weight maintenance, and they walked 3 days and strength trained 2 days each week. Subjects also self-injected GH (0.025 mg/kg BW.day), IGF-I (0.015 mg/kg BW.day), a combination of these doses of GH and IGF-I, or placebo (P). Twenty-eight women completed the study, as five subjects dropped out due to intolerable side-effects (e.g. edema). Weight loss occurred in all groups, with the largest decrease occurring in the GH plus IGF-I group (5.6 +/- 1.4 kg). Fat mass significantly decreased in all groups, with the largest losses observed in GH and GH plus IGF-I groups (6.3 +/- 1.8 and 8.4 +/- 2.8 kg, respectively). Despite weight loss, BMR was maintained in all groups. Muscle strength increased with training for all groups, and depression and anxiety scores decreased in groups receiving IGF-I. These data show that obese postmenopausal women can lose weight and fat without compromising fat free mass, BMR, or gains in muscle strength, and that GH and IGF-I given together may enhance fat loss over either given alone.

  View details for Web of Science ID 000073535300013

  View details for PubMedID 9589642

• Patterns of brain volume abnormalities in Alzheimer's disease Pfefferbaum, A., SULLIVAN, E. V., Mathalon, D. H., Yesavage, J. A., Tinklenberg, J. R., Lim, K. O. ELSEVIER SCIENCE INC. 1998: 23S–24S

  View details for Web of Science ID 000073240700078

• A follow-up study of actigraphic measures in home-residing Alzheimer's disease patients JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Yesavage, J. A., Friedman, L., Kraemer, H. C., Noda, A., Wicks, D., Bliwise, D. L., Sheikh, J., Tinklenberg, J., Zarcone, V. 1998; 11 (1): 7-10

  Abstract

  This article reports cross-sectional and follow-up data with actigraphic measures of nocturnal sleep and rest/activity in 61 Alzheimer's disease (AD) patients as well as the relation of actigraphic measures to levels of behavioral disturbance across different stages of the disease. Over the course of approximately 1.5 years' follow-up, patients showed significant deterioration of nocturnal sleep parameters, but no significant change in rest/activity circadian rhythm parameters. There were also significant correlations among nocturnal sleep, rest/activity circadian rhythm, and behavioral disturbance measures, but only in relatively early stages of AD. It is argued that study of nocturnal sleep and circadian rhythm in relation to behavioral disturbance in AD requires longitudinal data and analyses that take into account the stage of disease at which patients are assessed.

  View details for Web of Science ID 000074755600002

  View details for PubMedID 9686746

• N400 evidence for picture naming difficulty Ford, J. M., Askari, N., Hoffman, J. R., Wu, J. J., Yesavage, J., Tinklenberg, J. R., Gabrieli, J. MIT PRESS. 1998: 33–33

  View details for Web of Science ID 000073196500091

• Adjusting Mini-Mental State Examination scores for age and educational level to screen for dementia: correcting bias or reducing validity? International psychogeriatrics Kraemer, H. C., MORITZ, D. J., Yesavage, J. 1998; 10 (1): 43-51

  Abstract

  The question of whether Mini-Mental State Examination scores should be adjusted for age and educational levels to screen for dementia in clinical populations is reexamined in the results of a recent study supporting adjustment. If the criterion is to identify the most accurate screening procedure for each sociodemographic subgroup, the evidence indicates that the unadjusted scores are preferable. Other criteria might lead to different conclusions. The validities of some of these criteria are questionable because they have the flaw that they are easily satisfied by using random decision procedures.

  View details for PubMedID 9629523

• Advantages of excluding underpowered studies in meta-analysis: Inclusionist versus exclusionist viewpoints PSYCHOLOGICAL METHODS Kraemer, H. C., Gardner, C., Brooks, J. O., Yesavage, J. A. 1998; 3 (1): 23-31

  View details for Web of Science ID 000072410000002

• Structural MRI correlates of recognition memory in Alzheimer's disease JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY Cahn, D. A., SULLIVAN, E. V., Shear, P. K., Marsh, L., Fama, R., Lim, K. O., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. 1998; 4 (2): 106-114

  Abstract

  Neuroimaging and lesion studies have demonstrated that hippocampal volume correlates with memory performance, but material-specific lateralization of this structure-function relationship has been inconsistent. This MRI study examined the relative contributions of left and right temporal lobe volumes to verbal and nonverbal recognition memory in a group of 20 Alzheimer's disease (AD) patients. There was a significant relationship between extent of right hippocampal and right temporal gray matter tissue volume deficit and performance on the face recognition subtest of the Warrington Recognition Memory Test. The face recognition test correlated with right hemisphere volume but not to left, indicating a material-specific relationship between brain structure and function in this patient group. Right temporal horn volume did not account for a significant proportion of variance in face recognition memory. Although word recognition was not significantly correlated with either left or right hippocampal volume in the total group, there was a strong correlation between left hippocampal volume and word recognition memory in the female AD patients. Thus, face recognition shows a material specific relationship with select lateralized hippocampal and temporal cortical volumes in AD patients, regardless of gender, whereas the verbal recognition-left-hippocampal volume relationship may be mediated by gender.

  View details for Web of Science ID 000075146200002

  View details for PubMedID 9529820

• Selective cortical and hippocampal volume correlates of Mattis Dementia Rating Scale in Alzheimer disease Annual Meeting of the International-Neuropsychological-Society Fama, R., SULLIVAN, E. V., Shear, P. K., Marsh, L., Yesavage, J. A., Tinklenberg, J. R., Lim, K. O., Pfefferbaum, A. AMER MEDICAL ASSOC. 1997: 719–28

  Abstract

  To examine whether each of the 5 Mattis Dementia Rating Scale (DRS) scores related to magnetic resonance imaging-derived volumes of specific cortical or limbic brain regions in patients with Alzheimer disease (AD).Relations between DRS measures and regional brain volume measures were tested with bivariate and multivariate regression analyses.The Aging Clinical Research Center of the Stanford (Calif) University Department of Psychiatry and Behavioral Science and the Geriatric Psychiatry Rehabilitation Unit of the Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif.Fifty patients with possible or probable AD. Magnetic resonance imaging data from 136 healthy control participants, age 20 to 84 years, were used to correct brain volumes for normal variation arising from intracranial volume and age.The DRS scores and volumes of regional cortical gray matter and of the hippocampus.Memory scores of the patients with AD were selectively related to hippocampal volumes. Attention and construction scores were related to several anterior brain volume measures, with attention showing a significantly greater association to right than left hemisphere measures. Initiation/perseveration scores were not significantly correlated with any measure of regional gray matter volume, but performance was related to prefrontal sulcal widening, with a greater association with the left than right sulcal volume.Certain DRS subtests are predictably correlated with selective regional brain volumes in AD. The specific relation between memory and hippocampal volumes and the nonsignificant relations between memory and regional cortical volumes suggest a dissociation between cortical and hippocampal contributions to explicit memory performance.

  View details for Web of Science ID A1997XE00100008

  View details for PubMedID 9193207

• Cognitive function and the costs of Alzheimer disease - An exploratory study ARCHIVES OF NEUROLOGY Ernst, R. L., Hay, J. W., Fenn, C., Tinklenberg, J., Yesavage, J. A. 1997; 54 (6): 687-693

  Abstract

  To estimate the dollar savings in costs attainable from drug or other treatments for Alzheimer disease (AD) that stabilize or reverse patients' cognitive decline.Medical and other disease-related utilization data were collected from the caregivers of 64 patients diagnosed as having probable AD. The quantities of utilization were priced at national levels to generate measures of illness costs. Costs per patient were then estimated as regression functions of scores on the Mini-Mental State Examination (MMSE), which was used as an index of patient cognitive function. Potential savings in illness costs were estimated by comparing predicted costs at various baseline and intervention-level values of the patient's MMSE score.The potential savings in illness costs attainable from treatment are small for mildly and very severely demented patients with AD. However, for moderately to severely demented home-dwelling patients having, say, an MMSE score of 7 at baseline, prevention of a 2-point decline in the score would save about $3700 annually, and a 2-point increase in an MMSE score rather than a 2-point decline would save about $7100.Large savings in the costs of caring for moderately to severely demented home-dwelling patients with AD may be achievable from disease interventions that have minor effects on patients' cognitive status.

  View details for Web of Science ID A1997XE00100004

  View details for PubMedID 9193203

• No association between apolipoprotein E epsilon 4 allele and rate of decline in Alzheimer's disease AMERICAN JOURNAL OF PSYCHIATRY Murphy, G. M., Taylor, J., Kraemer, H. C., Yesavage, J., Tinklenberg, J. R. 1997; 154 (5): 603-608

  Abstract

  The relationship between number of apolipoprotein E epsilon 4 (APOE epsilon 4) alleles and the rate of cognitive decline in patients with Alzheimer's disease was examined.Rate of decline in score on the Mini-Mental State was measured during the active phase of the decline curve between Mini-Mental State scores of 23 and 0. To characterize onset, the authors also estimated for each subject the age at which the Mini-Mental State score fell below 23 and obtained a retrospective report of age at onset from the caregiver. The number of APOE epsilon 4 alleles carried by each subject was determined from genomic DNA samples. The study included 86 subjects with probable Alzheimer's disease who had had at least two cognitive evaluations (a mean of 5.6 evaluations per subject over an average period of 3.6 years).The results did not support an association between APOE epsilon 4 dosage and rate of cognitive decline. Age at onset and age at which the Mini-Mental State score fell below 23 were also not related to APOE epsilon 4 dosage. The APOE allele frequencies were similar to those in other studies of subjects with Alzheimer's disease, showing an enrichment of the epsilon 4 allele.Although the APOE epsilon 4 allele is a risk factor for Alzheimer's disease, there is no support of a strong association between APOE epsilon 4 dosage and rate of cognitive decline. The epsilon 4 allele did not predict age at onset. Methodological inconsistencies may account for discrepancies between these results and previous findings.

  View details for Web of Science ID A1997WX13000004

  View details for PubMedID 9137113

• No association between the alpha 1-antichymotrypsin A allele and Alzheimer's disease NEUROLOGY Murphy, G. M., SULLIVAN, E. V., GALLAGHERTHOMPSON, D., Thompson, L. W., vanDuijn, C. M., Forno, L. S., Ellis, W. G., Jagust, W. J., Yesavage, J., Tinklenberg, J. R. 1997; 48 (5): 1313-1316

  Abstract

  The alpha 1-antichymotrypsin (ACT) A allele was recently associated with Alzheimer's disease (AD), and the ACT AA genotype was reported to be more frequent in AD subjects with the apolipoprotein E (APOE) epsilon4 allele. We examined ACT and APOE genotypes in a sample of 160 subjects with probable AD and in 102 elderly control subjects. ACT A allele frequencies were similar in AD subjects (0.503) and elderly controls (0.519). In addition, we found no evidence that in AD the AA genotype is more frequent in subjects with the APOE epsilon4 allele than in those without it. Our results do not support an association between the ACT A allele and AD.

  View details for Web of Science ID A1997WZ77800030

  View details for PubMedID 9153464

• Disruptive behavior and actigraphic measures in home-dwelling patients with Alzheimer's disease: Preliminary report JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY Friedman, L., Kraemer, H. C., Zarcone, V., Sage, S., Wicks, D., Bliwise, D. L., Sheikh, J., Tinklenberg, J., Yesavage, J. A. 1997; 10 (2): 58-62

  Abstract

  The purpose of this preliminary report was to explore overall level and diurnal patterning of caregiver reports of abnormal behavior and to explore relationships with actigraphic measures of sleep/wake activity in Alzheimer's disease (AD) patients. Our primary behavioral measure was the Time-based Behavioral Disturbance Questionnaire (TBDQ). The overall score on this measure was shown to have adequate test-retest reliability and convergent validity with another behavioral measure. Significant correlations were obtained between the TBDQ overall score and actigraphically scored sleep efficiency (r = -.35, P < .05) and wake after sleep onset (r = .43, P < .01) in 41 subjects. The data suggest a moderate relationship between actigraphic measures of sleep/wake and disturbed behavior in home-dwelling AD patients.

  View details for Web of Science ID A1997XC89900004

  View details for PubMedID 9188020

• Automatic and effortful processing in aging and dementia: Event-related brain potentials NEUROBIOLOGY OF AGING Ford, J. M., Roth, W. T., Isaacks, B. G., Tinklenberg, J. R., Yesavage, J., Pfefferbaum, A. 1997; 18 (2): 169-180

  Abstract

  Automatic and effortful processes were investigated using event-related brain potentials (ERPs) recorded from moderately impaired subjects with probable Alzheimer's Disease (AD), normal elderly, and normal young controls. The effects of effortful attention on ERPs to loud noises and the effects of stimulus intrusiveness on effortfully elicited ERPs were studied. First, ERPs to task relevant and irrelevant startling noises were compared. Second, ERPs to startling noises and moderate tones were compared when both were targets. The effects of age (young vs. elderly controls) and effects of dementing disease (AD subjects vs. elderly controls) were also assessed. Effortful attention augmented noise-elicited P300 amplitude in elderly subjects, but not in young. Intrusiveness augmented task-relevant P300 amplitude in young subjects, but not in elderly. Neither variable affected P300 amplitude in AD subjects. Thus, effects of age and disease depended on how P300 was elicited: when effortfully elicited, P300 amplitude was affected by disease but not age; when automatically elicited, P300 amplitude was affected by age but not disease. N1 effects differed from P300 effects.

  View details for Web of Science ID A1997XP01300006

  View details for PubMedID 9258894

• The apolipoprotein E epsilon 4 allele is associated with increased behavioral disturbance in Alzheimer's disease AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY Murphy, G. M., Taylor, J., Tinklenberg, J. R., Yesavage, J. A. 1997; 5 (1): 88-89

  View details for Web of Science ID A1997VZ64200012

  View details for PubMedID 9169250

• Rate of cognitive decline in Alzheimer's disease is not affected by the alpha-1-antichymotrypsin A allele or the CYP2D6 B mutant NEUROSCIENCE LETTERS Murphy, G. M., Yang, L., Yesavage, J., Tinklenberg, J. R. 1996; 217 (2-3): 200-202

  Abstract

  Patients with Alzheimer's disease (AD) show considerable heterogeneity in the rate at which they decline cognitively. The biological basis for this heterogeneity is unknown. We genotyped 86 subjects with diagnoses of probable AD to determine if they carried the alpha-1-antichymotrypsin (ACT) A allele, which has been associated with AD, or the CYP2D6 B mutant, found at increased frequency in the Lewy body variant (LBV) of AD. We then examined longitudinally-collected cognitive data to determine if these genetic markers were associated with rate of cognitive decline. Our results indicate that neither the ACT A allele nor the CYP2D6 B allele have a significant association with rate of decline on the Folstein Mini Mental State examination. Further, subjects with both the ACT A allele and the apolipoprotein epsilon 4 allele showed no evidence of accelerated decline. These findings suggest that any increased risk of developing AD or LBV conferred by these markers is not necessarily accompanied by a more rapid rate of decline.

  View details for Web of Science ID A1996VQ39800033

  View details for PubMedID 8916107

• N400 evidence of abnormal responses to speech in Alzheimer's disease ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY Ford, J. M., Woodward, S. H., SULLIVAN, E. V., Isaacks, B. G., Tinklenberg, J. R., Yesavage, J. A., Roth, W. T. 1996; 99 (3): 235-246

  Abstract

  The status of semantic priming in Alzheimer's disease (AD) was examined using the speech elicited N400 component of the event-related brain potential (ERP). Speech was naturally paced, with 1 s of silence before the final word. In the semantic task, subjects attended to the meaning of the sentences for a subsequent memory test. In the phonemic monitoring task, they counted the words beginning with the letter 'p'. The effects of age were assessed by comparing young and elderly, and the effects of disease by comparing elderly and AD subjects. In healthy young and elderly subjects, N400s were large to semantically unprimed words and small to semantically primed words. In AD subjects, N400s were large to primed words, reflecting a failure of the sentence stem to prime the final word, and probably an impairment in semantic knowledge. The N400 priming effect was not smaller during the phonemic than semantic task in any group, suggesting that the semantic qualities of speech are processed even when subjects are attending to phonemic qualities. N400 latency was delayed with age and further delayed with dementia.

  View details for Web of Science ID A1996VL66900004

  View details for PubMedID 8862113

• Alcohol elimination and simulator performance of male and female aviators: A preliminary report AVIATION SPACE AND ENVIRONMENTAL MEDICINE Taylor, J. L., DOLHERT, N., Friedman, L., Mumenthaler, M., Yesavage, J. A. 1996; 67 (5): 407-413

  Abstract

  In this preliminary study of alcohol effects on aviators' flight simulator performance, we addressed some methodological issues regarding possible gender-related differences in response to alcohol.Subjects were 11 male and 12 female general aviation pilots, ages 21-40. Subjects received 8 h of training before they were tested with alcohol. On the alcohol test day they were tested before drinking, while intoxicated (target BAC of 0.08%), and 8 h after drinking.The average, observed peak BAC readings for men and women were within 0.003% of each other. We observed faster disappearance rates for women such that women reached the FAA cutoff of 0.04% approximately 1 h before men, on average. Compared to predrink performance, there was a significant decrement in simulator performance during acute intoxication, but not 8 h after drinking. There were no significant gender differences in performance before or after drinking alcohol. Slower rates of alcohol elimination were associated with larger performance changes 8 h after drinking. This is the first report to our knowledge suggesting a possible relation between alcohol elimination rate and change in performance after drinking alcohol.A 12.5% dose reduction for women appears to be adequate for achieving comparable peak BAC's for male and female groups. Future studies using measures of circadian rhythmicity in conjunction with pharmacokinetic and performance measures could potentially shed light on differences in subjects' acute and delayed responses to alcohol.

  View details for Web of Science ID A1996UH18500001

  View details for PubMedID 8725465

• Dangerousness commitments: Indices of future violence potential? BULLETIN OF THE AMERICAN ACADEMY OF PSYCHIATRY AND THE LAW ZEISS, R. A., Tanke, E. D., FENN, H. H., Yesavage, J. A. 1996; 24 (2): 247-253

  Abstract

  This study examines the accuracy of long-term clinical predictions of dangerousness among psychiatric inpatients and explores factors influencing the levels of such accuracy. Hospital and state criminal history records of all psychiatric patients (N = 31) for whom, during a four-year period, treatment staff pursued extended civil commitments based on dangerousness under the Postcertification for the imminently Dangerous statute (California Welfare and Institutions Code section 5300) were reviewed. A matched control group consisted of 31 patients who had been placed on 14-Day Certifications for Dangerousness to Others, but who were not subsequently placed on 180-Day Postcertifications. Sixty-one percent of patients in the postcertification group engaged in documented physically assaultive behavior during the extended one- to five-year follow-up period, compared with 26 percent of patients in the matched control group, suggesting that inclusion in the extended commitment group was indicative of greater long-term potential for assault. Differences in assaultiveness did not emerge during the first year of followup, but became clear and significant over subsequent years. Accuracy of prediction differed as a function of patient ethnic group.

  View details for Web of Science ID A1996UU93100009

  View details for PubMedID 8807164

• PERCEPTIONS OF LIFE STRESS AND CHRONIC INSOMNIA IN OLDER ADULTS PSYCHOLOGY AND AGING Friedman, L., Brooks, J. O., Bliwise, D. L., Yesavage, J. A., WICKS, D. S. 1995; 10 (3): 352-357

  Abstract

  This study compared the level of self-reported stress of 42 older good sleepers (M age = 68.2 years) and 42 poor sleepers (M age = 68.7 years). The relations among subjective ratings of sleep, level of perceived stress, and negative mood were analyzed for each group. Good and poor sleepers reported similar amounts of life stress, but the relations between life stress and sleep perceptions differed for the 2 groups. Specifically, within the group of poor sleepers, those with higher life stress had greater difficulty falling asleep and less early morning waking than did poor sleepers with lower life stress. There was no association between life stress and any sleep measures for good sleepers. These results are compatible with the notion that good and poor sleepers may have different susceptibilities to poor sleep despite experiencing similar stressful life events.

  View details for Web of Science ID A1995RV98000005

  View details for PubMedID 8527056

• LONGITUDINAL VOLUMETRIC COMPUTED TOMOGRAPHIC ANALYSIS OF REGIONAL BRAIN CHANGES IN NORMAL AGING AND ALZHEIMERS-DISEASE ARCHIVES OF NEUROLOGY Shear, P. K., SULLIVAN, E. V., Mathalon, D. H., Lim, K. O., Davis, L. F., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. 1995; 52 (4): 392-402

  Abstract

  This study used a semiautomated image analysis technique to quantify the rate and regional pattern of cerebrospinal fluid (CSF) volume changes in the computed tomographic brain examinations of healthy adults and patients with Alzheimer's disease (AD).Longitudinal, within-subject design, with statistical correction for longitudinal method error (eg, head repositioning effects).Palo Alto (Calif) Department of Veterans Affairs Medical Center.The 41 patients with AD were recruited from the Geriatric Psychiatry Research Unit and the National Institute of Mental Health Clinical Research Center of the Palo Alto Department of Veterans Affairs Medical Center. The 35 healthy control subjects were recruited from the local community.Cerebrospinal fluid volumes estimated from computed tomographic scans.Even after accounting for an estimate of method error (eg, head positioning effects) across computed tomographic examinations, the patients with AD showed greater annual CSF volume increases than did the control group. This CSF volume enlargement was not uniform across brain regions of interest; rather, the patients with AD showed disproportionate volume increases in the ventricular system and the sylvian fissures. Greater CSF volume changes in the patients with AD were significantly associated with greater cognitive decline on the Mini-Mental State Examination. Furthermore, younger patients with AD showed more rapid progression on computed tomographic scans than did older patients.The rate of CSF volume enlargement is region specific, with the most marked annual rate of change occurring in the ventricular system and the sylvian fissures. In addition, younger patients show more rapid progression in the ventricular and frontal sulcal brain regions of interest than do older patients.

  View details for Web of Science ID A1995QR98600014

  View details for PubMedID 7710375

• PREDICTION OF OUTCOME IN BEHAVIORALLY BASED INSOMNIA TREATMENTS JOURNAL OF BEHAVIOR THERAPY AND EXPERIMENTAL PSYCHIATRY Bliwise, D. L., Friedman, L., NEKICH, J. C., Yesavage, J. A. 1995; 26 (1): 17-23

  Abstract

  Factors related to successful behavioral intervention for individuals with insomnia are not well understood. In this study we employed the Neuroticism, Extraversion and Openness (NEO) Personality Inventory, to predict successful treatment outcome. Two behavioral treatments for insomnia, sleep restriction therapy (SRT) and relaxation training (RT) were employed in 32 elderly insomniacs. Following two baseline weeks, subjects underwent four weeks of individual treatment. Daily telephone call-ins generated data on sleep times and sleep latency. Follow-up occurred three months after the end of treatment. Results indicated that subjects showing the greatest improvement in total sleep time with both treatments were more traditional, conventional and rigid. Improvement in sleep onset latency was unrelated to NEO Scores. SRT appeared to be more effective for increasing total sleep time in these older subjects.

  View details for Web of Science ID A1995QZ28500003

  View details for PubMedID 7642756

• IDENTIFICATION OF FAST AND SLOW DECLINERS IN ALZHEIMER-DISEASE - A DIFFERENT APPROACH Roundtable on Early-Onset Alzheimer Disease - Evidence of a Specific Subtype, at the 4th International Conference on Alzheimers Disease and Related Disorders Brooks, J. O., Yesavage, J. A. LIPPINCOTT WILLIAMS & WILKINS. 1995: S19–S25

  Abstract

  As the body of knowledge about Alzheimer disease (AD) expands, more evidence is appearing to suggest the existence of different subtypes. The delineation of subtypes is important for a variety of reasons, and there are probably several ways to identify subtypes. One crude but functionally promising distinction is between patients with early onset of AD and those with late onset. In theory, such a distinction appears to be a simple one, but critical methodologic issues are involved in this dichotomy, because a key aspect is estimating the rate of progression of the disease in different subtypes. This article discusses potential problems with various measures of deterioration and illustrates how the application of a novel technique--the trilinear model--can address many of these problems and provide additional valuable information. The trilinear model is especially well suited for use in pharmacologic studies because of the additional insight that it can provide.

  View details for Web of Science ID A1995RW67600005

  View details for PubMedID 7546595

• ESTROGEN REPLACEMENT THERAPY AND MEMORY IN OLDER WOMEN JOURNAL OF THE AMERICAN GERIATRICS SOCIETY Robinson, D., Friedman, L., Marcus, R., Tinklenberg, J., Yesavage, J. 1994; 42 (9): 919-922

  Abstract

  To study the relationship between estrogen hormone replacement therapy and recall of proper names and words in cognitively intact older women.A case-control study using subjects matched on age and education.From a group of 278 older (age range 55 to 93 years) community-dwelling women volunteers for memory research, 72 older women taking estrogen replacement therapy were matched on age and education with a group of 72 women not taking estrogen.Dependent measures were performances on: a proper name recall test and a word recall test.Proper name recall was significantly better in those receiving estrogen (mean = 4.3; SD = 3.3) than in those not receiving estrogen (mean = 3.1; SD = 2.5), P = 0.01. There was also significantly greater variance in the name recall scores of the group taking estrogen than in the group not taking estrogen. For word recall, there was no significant difference between those subjects taking estrogen (mean = 6.4; SD 3.8) and those not taking estrogen (mean = 5.8; SD 3.7), P > 0.10.Estrogen use was associated with enhanced recall of proper names. Previous failures to find differences associated with estrogen use may reflect the memory measures used or an increased inter-individual variability of the estrogen-taking group, as was observed in the present study. Interpretation of these results should be tempered by their retrospective nature.

  View details for Web of Science ID A1994PE83200002

  View details for PubMedID 8064097

• THE EFFECTS OF INFORMATION LOAD AND SPEECH RATE ON YOUNGER AND OLDER AIRCRAFT PILOTS ABILITY TO EXECUTE SIMULATED AIR-TRAFFIC-CONTROLLER INSTRUCTIONS JOURNALS OF GERONTOLOGY Taylor, J. L., Yesavage, J. A., Morrow, D. G., DOLHERT, N., Brooks, J. O., Poon, L. W. 1994; 49 (5): P191-P200

  Abstract

  In this applied study of memory for orally presented information, 15 younger and 15 older pilots heard recorded air-traffic controller (ATC) messages in the context of six simulated flights. The ATC messages varied in length (3 vs 4 items), speech rate (235 vs 365 wpm), and type of command (course commands consisting of headings and altitudes vs radio/transponder commands consisting of radio frequencies and transponder codes). Older pilots made more execution errors on average and the age difference was greater for the radio/transponder commands, which contained more unique digits than the course commands. Although longer message lengths and faster speech rates led to higher error rates, the increases were not more marked in the older group. Backward digit span was correlated with communication performance, but the older group's lower level of accuracy was not explainable in terms of differences in digit span.

  View details for Web of Science ID A1994PE10600021

  View details for PubMedID 8056944

• ACUTE AND 8-HOUR EFFECTS OF ALCOHOL (0.08-PERCENT BAC) ON YOUNGER AND OLDER PILOTS SIMULATOR PERFORMANCE AVIATION SPACE AND ENVIRONMENTAL MEDICINE Taylor, J. L., DOLHERT, N., Morrow, D., Friedman, L., Yesavage, J. A. 1994; 65 (8): 718-725

  Abstract

  This preliminary study examined the acute and 8-hour effects of alcohol at a target peak BAC of 0.08% on pilot performance. Fourteen younger (mean age 27.6 years) and fourteen older (mean age 60.3 years) pilots flew a Frasca 141 simulator in a scenario that included ATC communications and emergencies. Plots were tested during an alcohol and placebo condition at three timepoints: predrink, acute intoxication, and 8 h postdrink. Of eight performance measures, two showed statistically significant effects related to alcohol. First, cockpit monitoring was poorer when pilots were intoxicated, with recovery at 8 h. Second, younger pilots made more communication errors under the influence and there was no significant recovery at 8 h. Older pilots made more communication errors than younger pilots, but possibly because of methodological problems, older pilots' communication performance was not significantly impaired by alcohol. These results provide direction for future research.

  View details for Web of Science ID A1994PA92100004

  View details for PubMedID 7980331

• FLIGHT SIMULATOR PERFORMANCE OF YOUNGER AND OLDER AIRCRAFT PILOTS - EFFECTS OF AGE AND ALCOHOL JOURNAL OF THE AMERICAN GERIATRICS SOCIETY Yesavage, J. A., DOLHERT, N., Taylor, J. L. 1994; 42 (6): 577-582

  Abstract

  To determine if older pilots forgot more about a learned flight task after a 10-month delay than did younger pilots and if the anticipated greater skill loss led older pilots' performance to be more disrupted by alcohol.Repeated measures comparative group design examining the effects of alcohol versus placebo in two age groups (younger and older) and at two timepoints: acute intoxication, at a Blood Alcohol Concentration (BAC) of 0.10%, and 8 hours post-drink.University medical center research laboratory.Fourteen younger (mean age = 27; SD = 4.21; range 21-34) and 13 older (mean age = 60; SD = 6.27; range 51-69) pilots, recruited from local flying clubs, with current FAA medical certificates.We examined the effects of alcohol versus placebo in the two age groups and at two times, ie, acute intoxication (target BAC 0.10%) and 8-hour post-drink. Subjects flew a Frasca 141 simulator in a flight task that they had previously learned but not practiced for several months. After completing a baseline flight, pilots were tested during either an alcohol or a placebo condition at the two timepoints. The main outcome measure was a composite measure of flight performance based upon the mean of eight component standardized scores from different aspects of the flight task.We found detrimental effects of alcohol on the main outcome measure both at the acute and 8-hour post-drink testing. There was also no significant difference between the older and younger pilots' performance of the flight task or in susceptibility to alcohol either while intoxicated or during hangover.This study replicates the findings of earlier studies that an 8-hour waiting period from "Bottle-to-Throttle" is insufficient but finds little difference according to age in recollection of a previously learned task or in susceptibility to either acute or hangover effects of alcohol.

  View details for Web of Science ID A1994NQ25100001

  View details for PubMedID 8201140

• HOW FAR VS HOW FAST IN ALZHEIMERS-DISEASE - THE QUESTION REVISITED ARCHIVES OF NEUROLOGY Kraemer, H. C., Tinklenberg, J., Yesavage, J. A. 1994; 51 (3): 275-279

  Abstract

  To expand on a recent study of 42 patients with probable Alzheimer's Disease that found that the only significant predictors of certain clinical end points were the degree of severity features at entry ("how far").A case series study of a cohort of 81 patients with Alzheimer's disease that used survival analysis methods similar those of the previous study but included a new technique for calculating rate of progression ("how fast") as well as entry characteristics ("how far").A university medical center and its affiliated Veterans Affairs Medical Center.All patients with probable and definite Alzheimer's disease studied at the Aging Clinical Research Center at Stanford University, Palo Alto, Calif, in the years 1981 and 1992 who met the following criteria: a mild to moderate level of severity of the disease (Mini-Mental State Examination score of 15 or above) at entry into the study and a minimum of three test points spaced approximately 6 months apart (to allow estimation of rate of progression). A total of 81 such patients were identified. These patients had been followed up for a mean of 4.53 +/- 2.3 years, with a range of 1.0 to 14.5 years.The outcome measure was the average rate of decline on the Mini-Mental State Examination.The results of our study replicated a previous finding that the degree of severity is a strong predictor of time course, but in addition we found that the rate of progression also appears to be a strong predictor of clinical course.There appears to be substantial heterogeneity in the rate of progression in patients with Alzheimer's disease, and, like initial degree of severity, rate of progression appears to be a strong predictor of clinical course.

  View details for Web of Science ID A1994NA08900013

  View details for PubMedID 8129639

• Spontaneous mnemonic strategies used by older and younger adults to remember proper names. Memory Brooks, J. O., Friedman, L., Gibson, J. M., Yesavage, J. A. 1993; 1 (4): 393-407

  Abstract

  Little attention has been focused on the spontaneous mnemonic strategies that people use to remember proper names. In the experiment reported here, groups of younger (< 25 years old) and older subjects (> or = 55 years old) were shown a series of 12 name-face pairs and instructed to remember them. In a subsequent test, they were shown the same faces and asked to recall the corresponding names. After the recall task, subjects completed a questionnaire about the mnemonic strategies they used. Our analyses revealed not only that the younger subjects recalled more names than did the older subjects, but also that older and younger subjects reported using certain strategies more frequently than other strategies. Moreover, regression analyses indicated that use of certain mnemonic strategies accounted for a significant proportion of recall performance beyond that accounted for by age alone. Older-old subjects (> or = 70 years old) recalled fewer names than did younger-old subjects (> or = 55 and < 70 years old), but they did not differ in the extent to which they used specific mnemonic strategies. Our results suggest that the use of spontaneous mnemonic strategies may play a role in the difference in proper name recall between younger and older adults.

  View details for PubMedID 7584279

• TYPOGRAPHY MANIPULATIONS CAN AFFECT PRIMING OF WORD STEM COMPLETION IN OLDER AND YOUNGER ADULTS PSYCHOLOGY AND AGING Gibson, J. M., Brooks, J. O., Friedman, L., Yesavage, J. A. 1993; 8 (4): 481-489

  Abstract

  The experiments reported here investigated whether changes of typography affected priming of word stem completion performance in older and younger adults. Across all experiments, the typeface in which a word appeared at presentation either did or did not match that of its 3-letter stem at test. In Experiment 1, no significant evidence of a typography effect was found when words were presented with a sentence judgment or letter judgment task. However, subsequent experiments revealed that, in both older and younger adults, only words presented with a syllable judgment task gave rise to the typography effect (Experiments 2-4). Specifically, performance was greater, when the presentation and test typeface matched than when they did not. Experiment 5, which used stem-cued recall, did not reveal a difference between syllable and letter judgment tasks. These findings highlight the complex nature of word stem completion performance.

  View details for Web of Science ID A1993MK54900002

  View details for PubMedID 8292277

• Cognitive decline in Alzheimer's disease: elaborating on the nature of the longitudinal factor structure of the Mini-Mental State Examination. International psychogeriatrics Brooks, J. O., Yesavage, J. A., Taylor, J., Friedman, L., Tanke, E. D., LUBY, V., Tinklenberg, J. 1993; 5 (2): 135-146

  Abstract

  The purpose of this paper was to use the Wechsler Adult Intelligence Scale (WAIS) to further define the nature of the underlying factors of the Mini-Mental State Examination (MMSE) as proposed by Tinklenberg et al. (1990). The MMSE was administered to 51 patients once every 6 months for at least one year; the WAIS was administered only at the beginning of the study. Stepwise regression analyses yielded these results: for the Following Commands factor, the best correlate was the Comprehension subtest; for the Language Repetition factor, the best correlate was the Picture Arrangement subtest; and for the Language Expression factor, the best correlates were the Digit Symbol and Object Assembly subtests. These relations help clarify the correlates of decline of AD patients on the MMSE.

  View details for PubMedID 8292767

• SELECTED PSYCHIATRIC-SYMPTOMS ASSOCIATED WITH RATE OF COGNITIVE DECLINE IN PATIENTS WITH ALZHEIMERS-DISEASE JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY MILLER, T. P., Tinklenberg, J. R., Brooks, J. O., FENN, H. H., Yesavage, J. A. 1993; 6 (4): 235-238

  Abstract

  We examined the relation between selected psychiatric symptoms and the average rate of decline in different areas of cognition in patients with Alzheimer's disease. Measures of decline were computed by determining patients' average rates of decline on the underlying factors of the Mini-Mental State Examination (MMSE). Patients with agitation or wandering declined more rapidly on the total MMSE score than did patients without either symptom. The Following Commands factor accounted for almost all of this decline. The findings suggest a relation between the presence of certain behavioral problems in Alzheimer's disease and decline in particular cognitive areas.

  View details for Web of Science ID A1993MA73400010

  View details for PubMedID 8251053

• THE TIME-COURSE OF ALCOHOL IMPAIRMENT OF GENERAL-AVIATION PILOT PERFORMANCE IN A FRASCA 141 SIMULATOR AVIATION SPACE AND ENVIRONMENTAL MEDICINE Morrow, D., Yesavage, J., LEIRER, V., DOLHERT, N., Taylor, J., Tinklenberg, J. 1993; 64 (8): 697-705

  Abstract

  This study examined the time-course of alcohol impairment of general aviation pilot simulator performance. We tested 14 young (mean age 25.8 years) and 14 older (mean age 37.9 years) pilots in a Frasca 141 simulator during alcohol and placebo conditions. In the alcohol condition, pilots drank alcohol and were tested after reaching 0.10% BAL, and then 2, 4, 8, 24, and 48 h after they had stopped drinking. They were tested at the same times in the placebo condition. Alcohol impaired overall performance. Alcohol impairment also depended on the order in which subjects participated in the alcohol and placebo sessions, with larger decrements for the alcohol-placebo order than for the opposite order. To examine the influence of alcohol independent of session order effects, we compared performance in the first alcohol session with performance in the first placebo session. This analysis showed that alcohol significantly reduced mean performance in the alcohol condition at 0.10% BAL and at 2 h. In addition, alcohol increased variability in performance in the alcohol session from 0.10% BAL to 8 h, suggesting that some subjects were more susceptible to alcohol than others. Older pilots tended to perform some radio communication tasks less accurately than younger pilots.

  View details for Web of Science ID A1993LP56600003

  View details for PubMedID 8368982

• DEPRESSION AS A CONFOUNDING VARIABLE IN THE ESTIMATION OF HABITUAL SLEEP TIME JOURNAL OF CLINICAL PSYCHOLOGY Bliwise, D. L., Friedman, L., Yesavage, J. A. 1993; 49 (4): 471-477

  Abstract

  Self-reported habitual sleep time is an important variable because short and long sleep times are associated with mortality. Speculation with regard to these results usually focuses on physical health, rather than psychological factors. We investigated the role of anxiety and depression in reports of habitual sleep times by examining the relative and absolute discrepancy between individuals' initial estimates of their sleep times and sleep diaries made over a 2-week period. Results indicated that depressed mood was associated not only with a tendency initially to underestimate length of sleep (relative discrepancy), but also to exaggerate reported sleep time regardless of direction (absolute discrepancy). These results imply that studies that examine relationships between reported sleep times and mortality should take mental health factors into account.

  View details for Web of Science ID A1993LT78200002

  View details for PubMedID 8408673

• THE METHODOLOGY OF STUDYING DECLINE IN ALZHEIMERS-DISEASE JOURNAL OF THE AMERICAN GERIATRICS SOCIETY Brooks, J. O., Kraemer, H. C., Tanke, E. D., Yesavage, J. A. 1993; 41 (6): 623-628

  Abstract

  To present a new model for analyzing longitudinal data. The trilinear model is superior to the commonly used linear model that includes the flawed assumption that decline is uniform throughout the course of disease--an assumption that does not correspond to clinical observations.A longitudinal cohort sample was used to compare the linear and trilinear models. Simulated longitudinal data were generated to assess classification errors with the trilinear model.The subjects were 80 patients with Alzheimer's disease tested in a hospital out-patient clinic.The trilinear model describes Alzheimer's disease as proceeding through three periods: An initial period of stability before detectable decline, a period of decline, and a final period of stability during which there is no further detectable decline. A program for the Apple Macintosh computer is available at no charge to apply the model to data.The analyses indicated that the trilinear model provides a better reflection of decline in Alzheimer's disease than does the linear model. This advantage is present whether the periods of stability reflect a "true" lack of decline or insensitivity of a measurement instrument.The trilinear model provides not only a more accurate estimate of the average rate of change, but also (when possible) estimates of the point at which decline begins and ends. Also, more detailed comparisons of tests could be made by using the trilinear parameters. The trilinear model would benefit researchers engaged in longitudinal research of progressive disorders.

  View details for Web of Science ID A1993LF77600006

  View details for PubMedID 8505459

• Differential diagnosis between depression and dementia. American journal of medicine Yesavage, J. 1993; 94 (5A): 23S-28S

  Abstract

  The proportion of U.S. citizens > 65 years of age is growing steadily. This aging of the population is expected to bring an increase in the incidence of depression and dementia, two clinical entities common in elderly populations. Although depression and dementia have many similarities, they also have important clinical distinctions. It is important for primary-care physicians to understand these distinctions, since only approximately 20% of patients with depressive symptoms are treated by mental health practitioners.

  View details for PubMedID 8503478

• DEVELOPMENT OF APHASIA, APRAXIA, AND AGNOSIA AND DECLINE IN ALZHEIMERS-DISEASE AMERICAN JOURNAL OF PSYCHIATRY Yesavage, J. A., Brooks, J. O., Taylor, J., Tinklenberg, J. 1993; 150 (5): 742-747

  Abstract

  The purpose of this study was to compare the stage and the subtype models of disease progression in Alzheimer's disease. The authors address the issue of whether the overall rate of clinical decline is different in Alzheimer's disease patients with and without early development of aphasia, apraxia, or agnosia.The study was a case series study. Two separate cohorts of Alzheimer's disease patients were used, one from an ongoing single center study at Stanford University (N = 57) and the other from a multicenter project across the state of California (N = 70). Patients were assessed every 6 months in the Stanford study and yearly in the state study. All patients were assessed at least three times. The outcome measure was the average rate of decline on the Mini-Mental State examination.The average rates of decline on the Mini-Mental State were computed for each subject. Subjects were then divided among groups according to whether and when they exhibited aphasia, agnosia, or apraxia. The effects of the presence of aphasia, agnosia, or apraxia were assessed by comparing the average rates of decline on the Mini-Mental State.Alzheimer's disease patients who developed aphasia or apraxia declined more rapidly than those patients who did not develop either sign. These results were not attributable to differences in Mini-Mental State scores at entry into the study. The results suggest the presence of subtypes of Alzheimer's disease in which accelerated decline is associated with the early appearance of certain neurological signs.

  View details for Web of Science ID A1993LA32300010

  View details for PubMedID 8480819

• GREATER ABNORMALITIES OF BRAIN CEREBROSPINAL-FLUID VOLUMES IN YOUNGER THAN IN OLDER PATIENTS WITH ALZHEIMERS-DISEASE ARCHIVES OF NEUROLOGY SULLIVAN, E. V., Shear, P. K., Mathalon, D. H., Lim, K. O., Yesavage, J. A., Tinklenberg, J. R., Pfefferbaum, A. 1993; 50 (4): 359-373

  Abstract

  This study used a semiautomated analysis technique to quantify differences in regional brain cerebrospinal fluid volumes observed with computed tomography between healthy adults and patients with Alzheimer's disease (AD).Cross-sectional, between-subject design, using an age-regression model.Palo Alto (Calif) Department of Veterans Affairs Medical Center.The 117 patients with probable or definite AD were recruited from the Geriatric Psychiatry Research Unit and National Institute of Mental Health Clinical Research Center of the Palo Alto Department of Veterans Affairs Medical Center. The 114 healthy volunteers were recruited from the local community.Cerebrospinal fluid volumes estimated from computed tomographic scans and neuropsychological test scores.The computed tomographic estimates of ventricular and sulcal cerebrospinal fluid volumes increased significantly in all sampled brain regions in normal aging and were vastly larger in AD than in normal aging. Furthermore, younger patients with AD had significantly greater cerebrospinal fluid volume enlargement than did older patients with AD compared with healthy controls of their age. When the AD group was divided on the basis of reported age at symptom onset, patients in the early-onset group (onset before age 65 years) were quantitatively more abnormal than and showed a different pattern of abnormality from the patients in the late-onset group. This onset difference was also evident in neuropsychological test performance.This cross-sectional study revealed a number of converging findings that suggested greater abnormality in the early-onset than in the late-onset group of patients with AD. The possibility remains, however, that the two onset groups represent different stages along a continuum of pathologic changes.

  View details for Web of Science ID A1993KV70200007

  View details for PubMedID 8460957

• A study of the problems older adults encounter when using a mnemonic technique. International psychogeriatrics Brooks, J. O., Friedman, L., Yesavage, J. A. 1993; 5 (1): 57-65

  Abstract

  This study explored problems older adults experience when using a mnemonic technique known as the method of loci. Older subjects received six hours of imagery, judgment, and relaxation pretraining followed by mnemonic training for either four or six hours (Regular or Extended training, respectively). At the end of training, subjects were given a list of the constituent steps of the method of loci and asked to indicate which, if any, were problematic. The factor structure of the relations among the problems varied according to the length of the training subjects received. Specifically, the factor structure of the difficulties reported by the Regular training group reflected problems with using the steps involved in the application of the method of loci, whereas for the Extended training group the factor structure reflected problems with abilities called upon in using the technique. Thus, even with Extended training, subjects may need additional pretraining to develop specific abilities necessary for the successful application of the mnemonic.

  View details for PubMedID 8499575

• Insomnia in Older Adults: Relations to Depression and Anxiety. American journal of geriatric psychiatry Friedman, L., Brooks, J. O., Bliwise, D. L., Yesavage, J. A. 1993; 1 (2): 153-159

  Abstract

  The authors examine the relations between insomnia and depression using the Beck Depression Inventory and between insomnia and anxiety using the State-Trait Anxiety Inventory and the Neuroticism Extroversion Openness-Personality Inventory (NEO) in a sample of 27 community-dwelling older patients with insomnia (mean age = 70.1 years). Sleep parameters were measured using both subjective (daily sleep logs) and objective (wrist actigraph) methods. Results varied according to the method used to measure sleep: with sleep logs, longer wake after sleep onset was related to both greater depression and anxiety (NEO), and longer time in bed was related to greater anxiety (NEO); with the actigraph, longer total sleep time was related to both greater depression and anxiety, and shorter sleep onset was related to greater depression.

  View details for DOI 10.1097/00019442-199300120-00008

  View details for PubMedID 28531030

• USE OF THE WRIST ACTIGRAPH TO STUDY INSOMNIA IN OLDER ADULTS SLEEP Brooks, J. O., Friedman, L., Bliwise, D. L., Yesavage, J. A. 1993; 16 (2): 151-155

  Abstract

  Measures derived from the wrist actigraph have been found to correlate highly with EEG measures of normal sleep. Although the actigraph has been used to study normal sleep, few studies have used the actigraph as a measure of sleep of elderly insomniacs. The present study, which used elderly insomniacs, sought to investigate the sensitivity of the actigraph to detect the effects of an insomnia treatment. The actigraph was sufficiently sensitive to detect the effect of the sleep restriction therapy used on several sleep measures. Subsidiary analyses suggested that the sleep log, although not an accurate measure of sleep, may be useful as a measure of elderly insomniacs' subjective perception of sleep. Because the actigraph can be used more easily and less expensively than the polysomnogram, the actigraph appears to be a promising measure for assessing the efficacy of treatment interventions in elderly insomniacs.

  View details for Web of Science ID A1993KN60100009

  View details for PubMedID 8446835

• INFLUENCE OF AGING AND PRACTICE ON PILOTING TASKS EXPERIMENTAL AGING RESEARCH Morrow, D., Yesavage, J., LEIRER, V., Tinklenberg, J. 1993; 19 (1): 53-70

  Abstract

  We examined how pilot age influences radio communication and routine flying tasks during simulated flight, and if practice reduces age differences in these tasks. The communication task involved reading back and executing messages with four commands (heading, altitude, communication frequency, transponder code). Routine flying tasks included takeoff, visual approach, and landing. Fifteen older (X = 38.4 years) and 16 younger (X = 26.1 years) private-license pilots flew 12 flights involving these tasks. Age differences were found in the communication task; older pilots read back and executed controller messages less accurately. However, age differences were not significant for any of the routine flying tasks except the approach. Age differences in communication performance were not reduced by practice, with older and young pilots improving at roughly the same rate across flights. These results are consistent with previous research showing age-related declines in working memory capacity. Capacity declines would produce greater age differences on communication than on routine flying tasks because the communication tasks imposed a greater load on working memory.

  View details for Web of Science ID A1993KN48000005

  View details for PubMedID 8444267

• SUBTYPES IN ALZHEIMERS-DISEASE AND THE IMPACT OF EXCESS DISABILITY - RECENT FINDINGS INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY FENN, H., LUBY, V., Yesavage, J. A. 1993; 8 (1): 67-73

  View details for Web of Science ID A1993KH52500010

• MARIJUANA CARRY-OVER EFFECTS ON PSYCHOMOTOR PERFORMANCE - A CHRONICLE OF RESEARCH 2nd International Colloquium on the Physiopathology of Cannabis and the Detection of Illicit Drugs Leirer, V. O., Yesavage, J. A., Morrow, D. G. CRC PRESS INC. 1993: 47-?

  View details for Web of Science ID A1993BA36H00003

• SUNDOWNING AND RATE OF DECLINE IN MENTAL FUNCTION IN ALZHEIMERS-DISEASE DEMENTIA Bliwise, D. L., Yesavage, J. A., Tinklenberg, J. R. 1992; 3 (5-6): 335-341

  View details for Web of Science ID A1992KC01100010

• THE RELATIONS AMONG CAREGIVER STRESS, SUNDOWNING SYMPTOMS, AND COGNITIVE DECLINE IN ALZHEIMERS-DISEASE JOURNAL OF THE AMERICAN GERIATRICS SOCIETY GALLAGHERTHOMPSON, D., Brooks, J. O., Bliwise, D., Leader, J., Yesavage, J. A. 1992; 40 (8): 807-810

  Abstract

  To investigate the relations among the initial perceived stress of Alzheimer patients' caregivers, the rate of change of perceived stress, patients' sundowning behaviors, and patients' rate of cognitive decline.A longitudinal cohort study in which Alzheimer patients and their caregivers were assessed at 6-month intervals.Hospital out-patient clinic. Patients and caregivers lived at home.Subjects were 35 patients (50-79 years) with Alzheimer's disease and their primary caregivers (24 males and 11 females); all caregivers were spouses.At time of entry into the study, caregivers indicated which of seven behaviors indicative of sundowning were exhibited by the patient. Patients were evaluated successively using the Mini-Mental State Examination, whereas caregivers completed the Perceived Stress Scale, provided an index of social support utilization, and completed the Beck Depression Inventory.Caregivers' initial perceived stress and the rate of change of perceived stress, patients' sundowning behavior, and rate of cognitive decline.The pattern of correlations indicated that both rate of cognitive decline and initial sundowning behavior were significantly correlated with initial perceived caregiver stress. The average rate of increase of caregivers' perceived stress was positively correlated with the initial incidence of sundowning behaviors, even when controlling for the effects of caregiver depression and social support utilization.Sundowning behavior of Alzheimer patients is associated with an increased rate of change of caregivers' perceived stress. This association may be specific to sundowning behavior because there was no relation between the rate of change of perceived stress and morning agitation. The findings suggest that future caregiver intervention programs could profitably focus on sundowning behavior rather than general agitation.

  View details for Web of Science ID A1992JH34400009

  View details for PubMedID 1634724

• TIMING OF SLEEP AND WAKEFULNESS IN ALZHEIMERS-DISEASE PATIENTS RESIDING AT HOME BIOLOGICAL PSYCHIATRY Bliwise, D. L., Tinklenberg, J. R., Yesavage, J. A. 1992; 31 (11): 1163-1165

  View details for Web of Science ID A1992JK71800011

  View details for PubMedID 1525280

• DEPRESSION IN THE ELDERLY - HOW TO RECOGNIZE MASKED SYMPTOMS AND CHOOSE APPROPRIATE THERAPY POSTGRADUATE MEDICINE Yesavage, J. A. 1992; 91 (1): 255-?

  Abstract

  Depression in the elderly is one of the most serious undiagnosed health problems in the United States. All physicians who care for elderly patients need to become aware of the signs of masked depression and treat it vigorously. Dr Yesavage explains how to differentiate depression from dementia, describes useful diagnostic screening tests, and offers recommendations for pharmacologic treatment of geriatric depression.

  View details for Web of Science ID A1992HA24700024

  View details for PubMedID 1728777

• EFFECTS OF PHOSPHATIDYLSERINE IN AGE-ASSOCIATED MEMORY IMPAIRMENT AND ALZHEIMERS-DISEASE 2ND SUNCOAST WORKSHOP ON THE NEUROBIOLOGY OF AGING Crook, T. H., Tinklenberg, J., Yesavage, J., Petrie, W., Wells, C., Nunzi, M. G., MASSARI, D. C. PLENUM PRESS DIV PLENUM PUBLISHING CORP. 1992: 207–224

  View details for Web of Science ID A1992BW50H00017

• NUTRITIONAL INTAKE IN PATIENTS WITH SENILE DEMENTIA OF THE ALZHEIMER TYPE ALZHEIMER DISEASE & ASSOCIATED DISORDERS Winograd, C. H., Jacobson, D. H., Butterfield, G. E., CRAGEN, E., EDLER, L. A., Taylor, B. S., Yesavage, J. A. 1991; 5 (3): 173-180

  Abstract

  The dietary intake of 29 healthy controls was compared with that of 35 community-dwelling patients with probable or definite senile dementia of the Alzheimer type (SDAT), based on NINCDS-ADRDA criteria. The control subject or the caregiver of the SDAT patient completed a 3-day estimated-dietary-intake record. Foods offered to patients were chosen, for the most part, by caregivers, but SDAT patients were allowed to eat ad libitum from those choices, and food consumed was recorded. Dietary intake was evaluated against the 1989 Recommended Dietary Allowances (RDA). Dietary intakes did not differ significantly between control and SDAT patients for any of the 32 nutrients analyzed. The controls and SDAT patients met the RDA guidelines for intake of total energy, protein, and micronutrients, with the exception of female SDAT patients, who did not consume a minimum of two thirds of the RDA for vitamin D. All biochemical indices of nutritional status were within normal limits for the SDAT patients. In addition, cognitive function did not correlate with intake of any nutrient studied. We conclude that moderately impaired, community-dwelling patients with SDAT do not differ from healthy controls in nutritional status or nutrient intake. Neither general nor nutrient-specific malnutrition was present in this population. Based on this cross-sectional study, malnutrition does not appear to be a major contributor to the pathogenesis of Alzheimer disease. However, this investigation examined only a single point in time, when patients were being fed by caregivers, so that the role of malnutrition at the beginning of the disease was not addressed.

  View details for Web of Science ID A1991GU43100003

  View details for PubMedID 1772637

• BLOOD-GLUCOSE AND INSULIN-RESPONSE IN PATIENTS WITH SENILE DEMENTIA OF THE ALZHEIMERS TYPE BIOLOGICAL PSYCHIATRY Winograd, C. H., Jacobson, D. H., Minkoff, J. R., Peabody, C. A., Taylor, B. S., WIDROW, L., Yesavage, J. A. 1991; 30 (5): 507-511

  View details for Web of Science ID A1991GE87200011

  View details for PubMedID 1932397

• EFFECTS OF PHOSPHATIDYLSERINE IN AGE-ASSOCIATED MEMORY IMPAIRMENT NEUROLOGY Crook, T. H., Tinklenberg, J., Yesavage, J., Petrie, W., Nunzi, M. G., MASSARI, D. C. 1991; 41 (5): 644-649

  Abstract

  We treated 149 patients meeting criteria for age-associated memory impairment (AAMI) for 12 weeks with a formulation of phosphatidylserine (100 mg BC-PS tid) or placebo. Patients treated with the drug improved relative to those treated with placebo on performance tests related to learning and memory tasks of daily life. Analysis of clinical subgroups suggested that persons within the sample who performed at a relatively low level prior to treatment were most likely to respond to BC-PS. Within this subgroup, there was improvement on both computerized and standard neuropsychological performance tests, and also on clinical global ratings of improvement. The results suggest that the compound may be a promising candidate for treating memory loss in later life.

  View details for Web of Science ID A1991FK92800006

  View details for PubMedID 2027477

• MARIJUANA CARRY-OVER EFFECTS ON AIRCRAFT PILOT PERFORMANCE AVIATION SPACE AND ENVIRONMENTAL MEDICINE Leirer, V. O., Yesavage, J. A., Morrow, D. G. 1991; 62 (3): 221-227

  Abstract

  This study finds evidence for 24-h carry-over effects of a moderate social dose of marijuana on a piloting task. In separate sessions, nine currently active pilots smoked one cigarette containing 20 mg of delta 9 THC and one Placebo cigarette. Using an aircraft simulator, pilots flew just before smoking, and 0.25, 4, 8, 24, and 48 h after smoking. Marijuana impaired performance at 0.25, 4, 8, and 24 h after smoking. While seven of the nine pilots showed some degree of impairment at 24 h after smoking, only one reported any awareness of the drug's effects. The results support our preliminary study and suggest that very complex human/machine performance can be impaired as long as 24 h after smoking a moderate social dose of marijuana, and that the user may be unaware of the drug's influence.

  View details for Web of Science ID A1991EZ17100005

  View details for PubMedID 1849400

• ALCOHOL, AGE, AND PILOTING - JUDGMENT, MOOD, AND ACTUAL PERFORMANCE INTERNATIONAL JOURNAL OF THE ADDICTIONS Morrow, D., LEIRER, V., Yesavage, J., Tinklenberg, J. 1991; 26 (6): 669-683

  Abstract

  We have previously described acute and carry-over effects of alcohol on young and older pilots' performance. In the present paper we report the effects of alcohol and age on self-assessment of performance and mood in the same study. Young and older pilots flew in a simulator during an alcohol and placebo condition. In the alcohol condition, they flew after reaching .04 g/dL (.04%) BAL, after .10% BAL, and then 2, 4, 8, 24, and 48 h after .10% BAL (they flew at the same times in the placebo condition). They rated confidence in ability to fly, mood, alertness, and intoxication before each flight, and perceived workload and performance after each flight. As reported in Morrow et al., alcohol had both acute and carry-over effects for 8 h on actual flight performance, with greater acute impairment for older pilots. The present study reports that these older pilots tended to be more aware than the young pilots of acute and carry-over alcohol impairment out to 4 h. By 8 h, however, all pilots were unaware of impairment. Alcohol also had a biphasic effect on mood, which increased on the ascending limb and decreased on the descending limb of the BAL curve.

  View details for Web of Science ID A1991GF43400004

  View details for PubMedID 1757171

• EFFECTS OF PHOSPHATIDYLSERINE IN AGE-ASSOCIATED MEMORY IMPAIRMENT 5TH WORLD CONGRESS OF BIOLOGICAL PSYCHIATRY Crook, T., Tinklenberg, J., Yesavage, J., Petrie, W., Nunzi, M. G., MASSARI, D. C. ELSEVIER SCIENCE PUBL B V. 1991: 112–114

  View details for Web of Science ID A1991BU83L00032

• A PRELIMINARY-STUDY COMPARING SLEEP RESTRICTION AND RELAXATION TREATMENTS FOR INSOMNIA IN OLDER ADULTS JOURNALS OF GERONTOLOGY Friedman, L., Bliwise, D. L., Yesavage, J. A., SALOM, S. R. 1991; 46 (1): P1-P8

  Abstract

  This study compared Sleep Restriction Therapy (SRT) and Relaxation Therapy (RLT) as treatments for insomnia in a sample of community-residing elderly (mean age, 69.7 years). SRT subjects (n = 10) and RLT subjects (n = 12) reported information about their sleep twice daily to a telephone recording machine for 2 weeks of baseline, 4 weeks of treatment, and 2 weeks at 3-month follow-up. Results showed sleep latency and waking after sleep onset were significantly reduced for both treatment groups under active treatment. Predictable reductions in time in bed and improved sleep efficiency reported during active treatment by SRT subjects were still apparent at 3-month follow-up; no corresponding changes were found for RLT. In both groups, increased total sleep time was reported at follow-up; the improvement for SRT subjects was approximately twice that seen in RLT. These findings, at this early stage in the development of behavioral treatments for insomnia in older adults, encourage further study.

  View details for Web of Science ID A1991FJ10900006

  View details for PubMedID 1986039

• Cognitive decline in patients with Alzheimer disease: differences in patients with and without extrapyramidal signs. Alzheimer disease & associated disorders MILLER, T. P., Tinklenberg, J. R., Brooks, J. O., Yesavage, J. A. 1991; 5 (4): 251-256

  Abstract

  We investigated the relationship between extrapyramidal signs (EPSs) in patients diagnosed with Alzheimer disease (AD) and the average rate of decline in different areas of cognition. The presence of tremors, cogwheel rigidity, or bradykinesia were scored as EPS using the California State Department of Health Services AD Diagnostic and Treatment Center Form. Measures of decline were computed by determining patients' average rates of decline on the Mini-Mental State Examination (MMSE). Of the 81 patients, 24 were determined to have EPS not related to medications. Overall, patients with EPS deteriorated 67% faster on MMSE (4.5 points per year) than did patients with no evidence of EPS (2.7 points per year). Our findings indicate that the clinical presence of EPS is a poor overall prognostic sign in patients with a clinical diagnosis of AD.

  View details for PubMedID 1781967

• LONGITUDINAL CHANGES IN REM-SLEEP IN ALZHEIMERS-DISEASE 5TH WORLD CONGRESS OF BIOLOGICAL PSYCHIATRY Guilleminault, C., Bliwise, D., Yesavage, J. A. ELSEVIER SCIENCE PUBL B V. 1991: 849–850

  View details for Web of Science ID A1991BU87G00253

• A QUANTITATIVE-ANALYSIS OF CT AND COGNITIVE MEASURES IN NORMAL AGING AND ALZHEIMERS-DISEASE PSYCHIATRY RESEARCH-NEUROIMAGING Pfefferbaum, A., SULLIVAN, E. V., Jernigan, T. L., Zipursky, R. B., Rosenbloom, M. J., Yesavage, J. A., Tinklenberg, J. R. 1990; 35 (2): 115-136

  Abstract

  Patients with presumptive Alzheimer's disease (AD) and healthy community volunteers received computed tomographic (CT) brain scans and cognitive tests. The CT scans were quantitatively analyzed with a semiautomated thresholding technique to derive volumetric measures of cerebrospinal fluid (CSF)-to-tissue ratios in six regions of interest (ROIs): lateral ventricles; vertex sulci, frontal sulci, Sylvian fissures, parieto-occipital sulci, and third ventricle. Regression analysis was performed on CT data from 85 older volunteers (ages 51-82) to generate age norms for each ROI. Within this group, tissue loss, as measured by the % CSF in each ROI, was highly correlated with age, although each ROI showed different rates of change over age. For all ROIs, the AD group had significantly more tissue loss than expected in normal aging. In addition, AD patients with a presenescent onset (before age 65) tended to have greater vertex sulcal and frontal sulcal tissue reduction than AD patients with a senescent onset (age 65 or after). When regional tissue reduction, corrected for age, was correlated with cognitive test scores, two sets of double dissociations emerged within the AD group: large CT z scores (i.e., decreased tissue and increased CSF) of frontal sulci, but not of the third ventricle, correlated with low Comprehension and Boston Naming Test scores, whereas large CT z scores of the third ventricle, but not of the frontal sulci, correlated with low scores on Digit Symbol and Picture Arrangement. These results suggest that heterogeneity of structural and functional integrity exists among patients with AD.

  View details for Web of Science ID A1990EU28600003

  View details for PubMedID 2100804

• COGNITIVE INTERVENTIONS TO IMPROVE FACE-NAME RECALL - THE ROLE OF PERSONALITY-TRAIT DIFFERENCES DEVELOPMENTAL PSYCHOLOGY GRATZINGER, P., Sheikh, J. I., Friedman, L., Yesavage, J. A. 1990; 26 (6): 889-893

  View details for Web of Science ID A1990EJ88100003

• LEARNING MNEMONICS - ROLES OF AGING AND SUBTLE COGNITIVE IMPAIRMENT PSYCHOLOGY AND AGING Yesavage, J. A., Sheikh, J. I., Friedman, L., Tanke, E. 1990; 5 (1): 133-137

  Abstract

  Previously validated methods of memory training were used in conjunction with the Folstein Mini-Mental State Examination (MMSE) to explore the relationship between complexity of learned mnemonic, aging, and subtle cognitive impairment. Subjects were 218 community-dwelling elderly. Treatment included imagery mnemonics for remembering names and faces and lists. There was a significant interaction among age, type of learning task (face-name vs. list), and improvement when controlling for MMSE score. There was also a significant interaction among MMSE score, type of learning task, and improvement when controlling for age. Scores on the more complex list-learning mnemonic were more affected by age and MMSE scores than were scores on the face-name mnemonic. Implications of the findings for cognitive training of the old old and the impaired are discussed.

  View details for Web of Science ID A1990CR69600016

  View details for PubMedID 2317292

• THE INFLUENCE OF ALCOHOL AND AGING ON RADIO-COMMUNICATION DURING FLIGHT AVIATION SPACE AND ENVIRONMENTAL MEDICINE Morrow, D., LEIRER, V., Yesavage, J. 1990; 61 (1): 12-20

  Abstract

  This study finds that alcohol and pilot age impair radio communication during simulated flight. Young (mean age 25 years) and older (mean age 42 years) pilots flew in a light aircraft simulator during alcohol and placebo conditions. In the alcohol condition, pilots drank alcohol and flew after reaching 0.04% BAC, after reaching 0.10% BAC, and then 2, 4, 8, 24, and 48 h after they stopped drinking at 0.10% BAC. They flew at the same times in the placebo condition. Alcohol and age impaired communication-based and overall flying performance during and immediately after drinking. Most important, alcohol and age cumulatively impaired performance, since older pilots were more impaired by alcohol. Notably, performance was as impaired 2 h after reaching 0.10% BAC as it was at 0.10% BAC. Moreover, overall performance was impaired for 8 h after reaching 0.10% BAC.

  View details for Web of Science ID A1990CF02700003

  View details for PubMedID 2302121

• MARIJUANA, AGING, AND TASK-DIFFICULTY EFFECTS ON PILOT PERFORMANCE AVIATION SPACE AND ENVIRONMENTAL MEDICINE LEIRER, O., Yesavage, J. A., Morrow, D. G. 1989; 60 (12): 1145-1152

  Abstract

  This study provides evidence that diverse factors can cumulatively contribute to human/machine performance decrements. In separate sessions, young and old pilots smoked one of three cigarettes containing either 0 mg, 10 mg, or 20 mg of the active ingredient, delta 9 THC. They flew a calm and a turbulent flight in a light aircraft simulator at 1, 4, 8, 24, and 48 hour (h) delay after smoking. Effects were found at 1 and 4 h after smoking in the turbulent flight conditions when 20 mg cigarettes were smoked. Drug dose level, age, weather conditions (i.e., task difficulty), and delay period all affected pilot performance. Most important, these variables produced cumulative performance decrements.

  View details for Web of Science ID A1989CC44500001

  View details for PubMedID 2604668

• SLEEP-APNEA IN ALZHEIMERS-DISEASE NEUROBIOLOGY OF AGING Bliwise, D. L., Yesavage, J. A., Tinklenberg, J. R., Dement, W. C. 1989; 10 (4): 343-346

  Abstract

  Mental deterioration accompanying sleep apnea has been noted frequently. Because sleep apnea increases with age, such deficits raise the possibility that dementia in the elderly could be related to sleep apnea. In this study we investigated this possibility cross-sectionally by comparing respiration during sleep in 28 patients with Alzheimer's disease (AD) and 25 nondemented controls. We hypothesized that higher levels of sleep apnea would be present in AD patients. Our results indicated no significant differences between AD patients and controls but those few AD patients who desaturated during sleep experienced morning confusion. The findings imply that AD and sleep apnea are two separate conditions which may still interact in the aged.

  View details for Web of Science ID A1989AK79000008

  View details for PubMedID 2812195

• REM LATENCY IN ALZHEIMERS-DISEASE BIOLOGICAL PSYCHIATRY Bliwise, D. L., Tinklenberg, J., Yesavage, J. A., Davies, H., PURSLEY, A. M., PETTA, D. E., WIDROW, L., Guilleminault, C., Zarcone, V. P., Dement, W. C. 1989; 25 (3): 320-328

  Abstract

  Latency to the first episode of rapid eye movement sleep (REML) has been proposed as a potential biomarker for Alzheimer's disease (AD). In this study, we compared REML values from 28 AD patients and 28 age- and sex-matched controls. We employed multiple definitions of REML and multiple cutoffs to classify patients and controls. Results indicated that the best REML definition and optimal cutoff criterion resulted in only 65% correct classifications. We discuss the longer REML in AD patients relative to controls in terms of both overall sleep disturbance and selective deterioration of the REM-cholinergic system. As REML may be relatively short in other forms of psychopathology (e.g., affective disorders), REML may still hold promise in the differential diagnosis of dementia and pseudodementia.

  View details for Web of Science ID A1989R741100008

  View details for PubMedID 2914155

• TECHNIQUES FOR COGNITIVE TRAINING OF MEMORY IN AGE-ASSOCIATED MEMORY IMPAIRMENT ARCHIVES OF GERONTOLOGY AND GERIATRICS Yesavage, J. A. 1989: 185-190

  View details for Web of Science ID A1989U568100015

  View details for PubMedID 2757731

• USE OF FLIGHT SIMULATORS TO INVESTIGATE THE EFFECTS OF ALCOHOL AND OTHER DRUGS ON PILOT PERFORMANCE .2. 5TH INTERNATIONAL SYMP ON AVIATION PSYCHOLOGY Morrow, D., Yesavage, J., LEIRER, V. OHIO STATE UNIV DEPT AVIATION. 1989: 203–208

  View details for Web of Science ID A1989BS50S00029

• THE EFFECTS OF AGE ON RECALL OF INFORMATION FROM A SIMULATED TELEVISION-NEWS BROADCAST EDUCATIONAL GERONTOLOGY Hill, R. D., Crook, T. H., ZADEK, A., Sheikh, J., Yesavage, J. 1989; 15 (6): 607-613

  View details for Web of Science ID A1989CG05000005

• MENTAL STATUS AS A PREDICTOR OF RESPONSE TO MEMORY TRAINING IN OLDER ADULTS EDUCATIONAL GERONTOLOGY Hill, R. D., Yesavage, J. A., Sheikh, J., Friedman, L. 1989; 15 (6): 633-639

  View details for Web of Science ID A1989CG05000007

• ASSOCIATION STUDY BETWEEN ALZHEIMERS-DISEASE AND RESTRICTION FRAGMENT LENGTH POLYMORPHISMS AT THE HUMAN AMYLOID BETA PROTEIN GENE LOCUS MOLECULAR BIOLOGY & MEDICINE Taylor, J. E., Tinklenberg, J. R., Eng, L. F., Yesavage, J. A., Vinogradov, S., Davies, H. G., GONZALEZDEWHITT, P. A., Frossard, P. M. 1988; 5 (3): 167-172

  Abstract

  Alzheimer's disease, an autosomal dominant disorder, is characterized by the presence of neurofibrillary tangles and senile extracellular plaques in the brain of affected individuals. An amyloid beta protein has been isolated from the core of these plaques, and the gene encoding this protein has been mapped to region q11.2 to q22.2 of chromosome 21. Independent linkage studies have shown that the locus responsible for familial Alzheimer's disease also maps to the long arm of chromosome 21. It is thus very tempting to speculate that a defect (or defects) of the amyloid beta protein gene is the cause of Alzheimer's disease. For this reason, we have done association studies between Alzheimer's disease and restriction fragment length polymorphisms of the amyloid beta protein gene locus. We report a study of six restriction fragment length polymorphisms at the human amyloid beta protein gene locus. Several haplotypes constitute very informative marker systems for this region of chromosome 21. One of the six polymorphisms, a 6.6/7.3 kb (kb = 10(3) base-pairs) EcoRI restriction fragment length polymorphism, is loosely associated with the presence of Alzheimer's disease in a population of 34 subjects.

  View details for Web of Science ID A1988T295100004

  View details for PubMedID 2907602

• HUMAN AMYLOID BETA PROTEIN GENE LOCUS - HAEIII RFLP NUCLEIC ACIDS RESEARCH Taylor, J. E., GONZALEZDEWHITT, P. A., Fuller, F., Cordell, B., Tinklenberg, J. R., Davies, H. D., Eng, L. F., Yesavage, J. A., Frossard, P. M. 1988; 16 (14): 7217-7217

  View details for Web of Science ID A1988P435200072

• ECOT14I-RFLP FOUND AT THE HUMAN AMYLOID BETA-PROTEIN GENE LOCUS NUCLEIC ACIDS RESEARCH Taylor, J. E., Cordell, B., Fuller, F., GONZALEZDEWHITT, P. A., Tinklenberg, J. R., Davies, H. D., Eng, L. F., Yesavage, J. A., Frossard, P. M. 1988; 16 (13): 6259-6259

  View details for Web of Science ID A1988P228300071

  View details for PubMedID 2899881

  View details for PubMedCentralID PMC336894

• Nonpharmacologic treatment of age-associated memory impairment. Comprehensive therapy Yesavage, J. A., Sheikh, J. I. 1988; 14 (6): 44-46

  View details for PubMedID 3046835

• RESPONSE TO MEMORY TRAINING AND INDIVIDUAL-DIFFERENCES IN VERBAL INTELLIGENCE AND STATE ANXIETY AMERICAN JOURNAL OF PSYCHIATRY Yesavage, J. A., Sheikh, J., Tanke, E. D., Hill, R. 1988; 145 (5): 636-639

  Abstract

  Prior studies have documented the effectiveness of several types of memory training for the elderly with normal age-related memory losses. Despite these positive results, there is substantial variability of individual response to treatment. The authors describe attributes of individuals most likely to benefit from two types of memory training. They found that for 40 elderly volunteers performance on the WAIS vocabulary subscale correlated with response to a treatment combining mnemonics and verbal elaboration techniques and scores on the Spielberger State-Trait Anxiety Inventory correlated with response to a treatment combining mnemonics and relaxation techniques.

  View details for Web of Science ID A1988N140600018

  View details for PubMedID 3282452

• VALIDATION OF THE GERIATRIC PSYCHIATRY KNOWLEDGE TEST HOSPITAL AND COMMUNITY PSYCHIATRY Sheikh, J. I., Yesavage, J. A., GULEVICH, G. 1988; 39 (4): 369-?

  View details for Web of Science ID A1988M776800003

  View details for PubMedID 3371903

• RATES OF CHANGE OF COMMON MEASURES OF IMPAIRMENT IN SENILE DEMENTIA OF THE ALZHEIMERS TYPE PSYCHOPHARMACOLOGY BULLETIN Yesavage, J. A., POULSEN, S. L., Sheikh, J., Tanke, E. 1988; 24 (4): 531-534

  View details for Web of Science ID A1988T349900006

  View details for PubMedID 3074314

• PRETRAINING ENHANCES MNEMONIC TRAINING IN ELDERLY ADULTS EXPERIMENTAL AGING RESEARCH Hill, R. D., Sheikh, J. I., Yesavage, J. A. 1988; 14 (4): 207-211

  Abstract

  One hundred twenty-eight elderly adults were recruited to assess the effects of affective judgment, imagery, and relaxation pretraining on mnemonic training. Participants were assigned to one of the following conditions: (1) visual imagery and affective judgment pretraining plus mnemonic training, (2) visual imagery pretraining only plus mnemonic training, (3) relaxation pretraining plus mnemonic training, (4) nonspecific pretraining plus mnemonic training, (5) nonspecific pretraining only, and (6) wait list. Subjects were tested at three times: prior to training (Time 1), following pretraining (Time 2), and at the conclusion of mnemonic training (Time 3). Although those receiving active pretraining plus mnemonics did not differ from one another at Time 3, they recalled more than those with no active pretraining. The results suggest that for mnemonics to be effective they should be coupled with active pretraining techniques.

  View details for Web of Science ID A1988AA96600006

  View details for PubMedID 3075181

• ASSOCIATIONS BETWEEN ALZHEIMERS-DISEASE AND RFLPS AT THE HUMAN AMYLOID BETA-PROTEIN GENE LOCUS PSYCHOPHARMACOLOGY BULLETIN Tinklenberg, J. R., Taylor, J. E., Eng, L. F., Yesavage, J. A., Vinogradov, S., Gonzalez, P. A., Davies, H. D., Frossard, P. M. 1988; 24 (3): 489-491

  View details for Web of Science ID A1988T061000041

  View details for PubMedID 2908678

• TARDIVE-DYSKINESIA AND STEADY-STATE SERUM LEVELS OF THIOTHIXENE ARCHIVES OF GENERAL PSYCHIATRY Yesavage, J. A., Tanke, E. D., Sheikh, J. I. 1987; 44 (10): 913-915

  Abstract

  The purpose of this investigation was to determine the relationship between serum levels of the neuroleptic agent thiothixene and tardive dyskinesia in schizophrenics of a wide age range. Forty-one male schizophrenic subjects, 21 with tardive dyskinesia and 20 without, were given a fixed dosage of thiothixene hydrochloride (10 mg orally four times daily) after a drug-free period of one week. Higher steady-state serum levels of thiothixene (obtained after five days of a fixed-dosage schedule) were associated with greater degrees of tardive dyskinesia. This relationship was independent of the relationship between tardive dyskinesia and age.

  View details for Web of Science ID A1987K304500011

  View details for PubMedID 2889439

• IMAGERY MNEMONIC TRAINING IN A PATIENT WITH PRIMARY DEGENERATIVE DEMENTIA PSYCHOLOGY AND AGING Hill, R. D., Evankovich, K. D., Sheikh, J. I., Yesavage, J. A. 1987; 2 (2): 204-205

  Abstract

  A visual-imagery mnemonic was used as a memory training aid for a 66-year-old patient with primary degenerative dementia. Length of retention time was used as the primary outcome measure. The application of the mnemonic procedure extended the length of retention time for name-face recall from baseline. Performance gains were sustained at one month.

  View details for Web of Science ID A1987H556800013

  View details for PubMedID 3268209

• THE EFFECT OF MNEMONIC TRAINING ON PERCEIVED RECALL CONFIDENCE IN THE ELDERLY EXPERIMENTAL AGING RESEARCH Hill, R. D., Sheikh, J. I., Yesavage, J. 1987; 13 (4): 185-188

  Abstract

  This study examined the effects of memory training on the relationship between perceived recall confidence and recall performance. The sample consisted of 76 elderly, community dwelling volunteers. Fifty-nine individuals received eight hours of memory training; the remaining 17 were wait-list controls. Participants were tested at pre- and post-intervention, and rated their confidence for recall of name-face pairs prior to each testing. The results showed a significant improvement in name-face recall at post test, favoring the group receiving mnemonic training. There was a significant association found between confidence ratings and recall performance at post-test. A closer examination of standardized regression residuals (confidence ratings and number of name-face pairs recalled) revealed that with mnemonic training, there was an improvement in the relationship between perceived confidence and recall performance following mnemonic training. The results suggest that the ability to assess changes in recall capacity and to judge future memory performance is enhanced by exposure to mnemonic training.

  View details for Web of Science ID A1987P170500003

  View details for PubMedID 3505872

• HANGOVER EFFECTS ON AIRCRAFT PILOTS 14 HOURS AFTER ALCOHOL INGESTION - A PRELIMINARY-REPORT AMERICAN JOURNAL OF PSYCHIATRY Yesavage, J. A., Leirer, V. O. 1986; 143 (12): 1546-1550

  Abstract

  Using a repeated measures counterbalanced design, the authors had 10 Navy P3-C Orion pilots fly two carefully designed simulated flights under control (no hangover) and hangover conditions. For the control condition, pilots drank no alcohol within 48 hours before the simulated flight. For the hangover condition, they flew 14 hours after drinking enough ethanol mixed with diet soft drinks to attain a blood alcohol concentration of 100 mg/dl. Pilot performance was worse in the hangover condition on virtually all measures but significantly worse on three of six variance measures and one of six performance measures. The results indicate that caution should be exercised when piloting an aircraft 14 hours or less after ingesting similar quantities of alcohol.

  View details for Web of Science ID A1986F055000006

  View details for PubMedID 3789207

• RECIDIVISM OF THE CRIMINALLY INSANE IN FRANCE - A 22-YEAR FOLLOW-UP JOURNAL OF CLINICAL PSYCHIATRY Yesavage, J. A., Benezech, M., LARRIEUARGUILLE, R., BOURGEOIS, M., Tanke, E., RAGER, P., Mills, M. 1986; 47 (9): 465-466

  Abstract

  Characteristics of 1096 recidivistic mentally ill criminal offenders admitted to a specialized hospital in France are described. All subjects were mentally ill and had been judged nonresponsible for an act of crime. Crimes against persons (murder or assault) accounted for 42% of the crimes for which these patients were admitted. The remaining causes of admission were crimes against property (theft) and "victimless" crimes. Subject files indicated a wide difference in cause of admission for violent acts among the different diagnostic categories. Although the frequency of readmission and violent acts at readmission did not change for the group as a whole, they did change between admissions for the different diagnostic groups. Results indicate that differences exist between diagnostic categories of mentally ill offenders in terms of not only the type of crime committed but also the likelihood of recidivism.

  View details for Web of Science ID A1986E195100005

  View details for PubMedID 3745128

• THYROTROPIN-RELEASING-HORMONE STIMULATION TEST AND ALZHEIMERS-DISEASE BIOLOGICAL PSYCHIATRY Peabody, C. A., Minkoff, J. R., Davies, H. D., Winograd, C. H., Yesavage, J., Tinklenberg, J. R. 1986; 21 (5-6): 553-556

  View details for Web of Science ID A1986A809900017

  View details for PubMedID 3083879

• PRIMING EFFECTS AND RECOGNITION MEMORY IN YOUNG AND ELDERLY ADULTS EXPERIMENTAL AGING RESEARCH Rose, T. L., Yesavage, J. A., Hill, R. D., Bower, G. H. 1986; 12 (1): 31-37

  Abstract

  The present study explores the effects of age on the priming of alternate homophone spellings and recognition memory. Sixteen young and sixteen elderly adults were given a general information test, a spelling test, and a test of recognition memory. By embedding the less frequently spelled member of different homophone units (e.g., write vs. right) in the general information questions, certain of the homophones were primed during this task. The effect of this priming was assessed through the subjects' choice of spelling for these words on the spelling test. Recognition memory was assessed by asking subjects to indicate which words from a longer list were presented during the spelling test. As found in prior research priming effects were observed in younger subjects; however, no significant priming effects occurred in the older age group. On the recognition test, homophones were more often correctly recognized than nonhomophones, and priming affected the scores of the young negatively, but had no effects, positive or negative, on the elderly. These results suggest possible differences in the underlying bases of memory loss in aged adults and amnesics.

  View details for Web of Science ID A1986A819100003

  View details for PubMedID 3709605

• Long-Term Efficacy of Cognitive Training for Age-Associated Memory Impairment: A Six-Month Follow-Up Study DEVELOPMENTAL NEUROPSYCHOLOGY Sheikh, J. I., Hill, R. D., Yesavage, J. A. 1986; 2 (4): 413-421

  View details for DOI 10.1080/87565648609540358

  View details for Web of Science ID 000209364000012

• NONPHARMACOLOGIC TREATMENTS FOR MEMORY LOSSES WITH NORMAL AGING AMERICAN JOURNAL OF PSYCHIATRY Yesavage, J. A. 1985; 142 (5): 600-605

  Abstract

  In a critical review of studies of training programs for elderly individuals with cognitive deficits, the author found that decrements of cognitive function with aging are not small. In 70-year-old normal individuals, losses are on the order of 20%-40%, depending on the process tested and the testing method. Although long-term effects are poorly documented, training programs for normal elderly individuals have been shown to improve selected cognitive processes, including memory, to about the same degree that some of these processes decline with aging.

  View details for Web of Science ID A1985AGG2500012

  View details for PubMedID 3885762

• PLASMA TESTOSTERONE LEVELS, DEPRESSION, SEXUALITY, AND AGE BIOLOGICAL PSYCHIATRY Yesavage, J. A., Davidson, J., WIDROW, L., Berger, P. A. 1985; 20 (2): 222-225

  View details for Web of Science ID A1985AMZ8700018

  View details for PubMedID 3971004

• EARLY PARENTAL DISCIPLINE AND ADULT SELF-DESTRUCTIVE ACTS JOURNAL OF NERVOUS AND MENTAL DISEASE Yesavage, J. A., WIDROW, L. 1985; 173 (2): 74-77

  Abstract

  Forty-five male inpatients with major depressive episodes by DSM-III criteria (296.2, 296.3, 296.5) were examined for correlates of inpatient self-destructive behavior. It was found that 44% of the variance for inpatient self-destructive acts could be accounted for by a combination of history of severe childhood discipline and parental conflict. Losses experienced during childhood were of less importance than these measures of family instability. Such information may be of use in the clinical prediction of self-destructive acts by depressed patients.

  View details for Web of Science ID A1985ABS4800002

  View details for PubMedID 3968549

• CORRELATIONS OF SELF-DIRECTED VIOLENCE IN ACUTE SCHIZOPHRENICS WITH CLINICAL RATINGS AND PERSONALITY MEASURES JOURNAL OF NERVOUS AND MENTAL DISEASE SEEMAN, K., Yesavage, J., WIDROW, L. A. 1985; 173 (5): 298-302

  Abstract

  Schizophrenic patients admitted to an acute inpatient unit were evaluated with the Comprehensive Psychopathological Rating Scale (CPRS), items reflecting hostility from the same scale, the Eysenck Personality Questionnaire (EPQ), and the Socialization and Self-Control scales of the California Psychological Inventory (CPI). Incidents of violent and nonviolent suicidal behavior and suicidal ideation before admission, and assaultiveness against self subsequent to admission were recorded. It was determined that behavioral ratings of degree of schizophrenic symptoms on the CPRS are more highly likely than ratings of hostility to correlate with self-directed violence before and subsequent to admission. Personality measures that reflect violence toward others (Psychoticism on the EPQ and Socialization on the CPI) also correlate with violence toward self.

  View details for Web of Science ID A1985AGX0200011

  View details for PubMedID 3989519

• CHARACTERISTICS OF ASSAULTIVE PATIENTS WHO DO AND DO NOT PROVIDE VISIBLE CUES OF POTENTIAL VIOLENCE AMERICAN JOURNAL OF PSYCHIATRY Tanke, E. D., Yesavage, J. A. 1985; 142 (12): 1409-1413

  Abstract

  Twelve assaultive psychiatric patients who had provided visible cues (i.e., verbal threats) of potential violence were compared on Brief Psychiatric Rating Scale factor scores with 13 patients who had not provided such cues. These groups differed from one another and from a group of 253 nonassaultive patients on one or more of the following dimensions: thinking disorder, withdrawal-retardation, anxious depression, hostile-suspiciousness, and activation. In addition, the factor scores significantly predicted the occurrence of violence among patients who did not exhibit visible cues.

  View details for Web of Science ID A1985AVH1900003

  View details for PubMedID 4073302

• DESGLYCINAMIDE-9-ARGININE-8-VASOPRESSIN (DGAVP, ORGANON-5667) IN PATIENTS WITH DEMENTIA NEUROBIOLOGY OF AGING Peabody, C. A., Thiemann, S., PIGACHE, R., MILLER, T. P., Berger, P. A., Yesavage, J., Tinklenberg, J. R. 1985; 6 (2): 95-100

  Abstract

  Vasopressin peptides have been shown to facilitate learning and memory in both animals and humans; however, the effectiveness in humans is controversial. In a double blind parallel group study, 17 demented subjects (either Alzheimer's or alcoholic) were given either desglycinamide-9-arginine-8-vasopressin (DGAVP) 92 micrograms intranasally TID or an identical placebo for 1 week after having received 1 week of placebo. To our knowledge, this is the first report of DGAVP being used in subjects with dementia. The DGAVP group had a statistically significant improvement on the Buschke list learning of low imagery words. However, for various reasons discussed in the paper, we feel this finding needs to be replicated before any definite conclusions can be drawn. Since there were no other appreciable behavioral effects of this DGAVP regimen, our results should be considered negative. There was no evidence of any DGAVP-related adverse effects, except for possible weight gain.

  View details for Web of Science ID A1985ALA3700002

  View details for PubMedID 3895014

• A KNOWLEDGE ASSESSMENT TEST FOR GERIATRIC PSYCHIATRY HOSPITAL AND COMMUNITY PSYCHIATRY Sheikh, J. I., Yesavage, J. A. 1985; 36 (11): 1160-1166

  View details for Web of Science ID A1985ATT3700003

  View details for PubMedID 4065839

• PRELIMINARY COMMUNICATION - INTELLECTUAL DEFICIT AND SLEEP-RELATED RESPIRATORY DISTURBANCE IN THE ELDERLY SLEEP Yesavage, J., Bliwise, D., Guilleminault, C., Carskadon, M., Dement, W. 1985; 8 (1): 30-33

  Abstract

  Polysomnography and neuropsychological tests administered to 41 nondemented male subjects (mean age, 69.5) indicated that impaired performance was associated with sleep-related respiratory disturbance. Such deficits could reflect deficits in vigilance or cortical insult resulting from nightly hypoxemia. Whether the degree of impairment observed here predicts more severe dementia will await longitudinal studies.

  View details for Web of Science ID A1985ADX6500004

  View details for PubMedID 3992106

• FANTASIZED COMPANIONS AND SUICIDAL DEPRESSIONS - 2 CASE-REPORTS AMERICAN JOURNAL OF PSYCHOTHERAPY SEEMAN, K., WIDROW, L., Yesavage, J. 1984; 38 (4): 541-557

  Abstract

  Two acutely suicidal adult patients with fantasized companions integral to the formation of suicide intent are presented. The phenomenon of the fantasized companion is reviewed, differentiated from true hallucinatory or psychotic phenomena, and related to other fantasy and dissociative states, such as daydreaming and multiple personalities. In this regard, the concept of hysterical psychosis is discussed. The functions served by the fantasized companions and their involvement in the successful treatment of the patients are described.

  View details for Web of Science ID A1984TR29200009

  View details for PubMedID 6517172

• PSYCHIATRISTS JUDGMENTS OF DANGEROUSNESS IN PATIENTS ON AN ACUTE CARE UNIT AMERICAN JOURNAL OF PSYCHIATRY Werner, P. D., Rose, T. L., Yesavage, J. A., SEEMAN, K. 1984; 141 (2): 263-266

  Abstract

  Statistical analyses suggest that psychiatrists emphasize hostility, agitation, previous assaultiveness, and suspiciousness as factors predictive of violence in psychiatric inpatients. When the actual correlates of violence in these patients are evaluated, a different picture of the assaultive inpatient emerges. Examination of differences between the cues emphasized by clinicians to make their predictions and the empirical correlates of violence suggests ways of improving the accuracy of clinical judgments of inpatients' dangerousness.

  View details for Web of Science ID A1984SA90600022

  View details for PubMedID 6691491

• SEMANTIC ELABORATION AND THE METHOD OF LOCI - A NEW TRIP FOR OLDER LEARNERS EXPERIMENTAL AGING RESEARCH Yesavage, J. A., Rose, T. L. 1984; 10 (3): 155-159

  Abstract

  The present study examined the effectiveness of two variations of a list learning mnemonic, the method of loci, on the recall of elderly subjects. In the Loci Only group (n = 20) subjects were instructed in the standard mnemonic and taught how to produce visual images associating each item to be remembered with one of several familiar locations. A second group, the Loci + Judgment condition (n = 17), received identical instructions except that they were taught, in addition, to make a personal judgment of the pleasantness of each visual image association. As predicted, subjects in the Loci Plus Judgment group showed greater improvement in their recall following instruction in the mnemonic. These results point to the importance of nonredundant forms of stimulus elaboration as a means of enhancing the accessibility of visual images and the effectiveness of visual mnemonic techniques.

  View details for Web of Science ID A1984TZ95100006

  View details for PubMedID 6519145

• AUDITORY VERSUS MEMORY DEFICITS IN PARANOID AND CHRONIC UNDIFFERENTIATED SCHIZOPHRENIA JOURNAL OF PSYCHIATRIC TREATMENT AND EVALUATION Yesavage, J. A., PORTNOFF, L. A., Rose, T. L. 1983; 5 (4): 309-314

  View details for Web of Science ID A1983RH92600002

• INTERACTIVE IMAGERY AND AFFECTIVE JUDGMENTS IMPROVE FACE-NAME LEARNING IN THE ELDERLY JOURNALS OF GERONTOLOGY Yesavage, J. A., Rose, T. L., Bower, G. H. 1983; 38 (2): 197-203

  Abstract

  Groups of elderly adults were taught to learn name-to-face associations using one of three different techniques. In a control group (no image) participants were taught for each face-name pair to select a prominent facial feature and to transform the surname into a concrete word. Persons in a second group (image) additionally were taught to employ interactive imagery to form an association between the prominent feature and the transformed name. The third group (image + judgment) was treated the same as the second except that these individuals were also taught to judge the pleasantness of the image association that was formed. As predicted, improvement following instruction was minimal when no image association was formed but strong when interactive imagery was used. Moreover, those persons in the image + judgment group remembered more names than those in the image group and showed less forgetting on a measure of delayed recall. In addition to replicating and extending the findings of previous research with a different sample, the present study demonstrates that semantic orienting tasks can be used to enhance the retention of visual image associations as well as the simpler stimuli used in prior research.

  View details for Web of Science ID A1983QG28300009

  View details for PubMedID 6827036

• CONCENTRATION AND MNEMONIC TRAINING IN ELDERLY SUBJECTS WITH MEMORY COMPLAINTS - A STUDY OF COMBINED THERAPY AND ORDER EFFECTS PSYCHIATRY RESEARCH Yesavage, J. A., Rose, T. L. 1983; 9 (2): 157-167

  Abstract

  In a study of a cognitive retraining program for the elderly, subjects received a combination of two types of training designed to reduce the memory impairment associated with normal aging. Concentration training (CT) consisted of techniques to improve selective and sustained attention. Mnemonic training (MT) involved an associative imagery technique designed to enhance the organization and retrieval of information. Order effects were examined using two groups of subjects. One group received CT followed by MT whereas the other group received MT before CT. It was hypothesized that the CT-MT sequence would improve immediate and delayed serial recall more than the reverse sequence. This hypothesis was supported and transfer effects were found on a paired-associates learning task. The findings suggest a need for further research on potential interactions and sequencing effects among different forms of cognitive training.

  View details for Web of Science ID A1983RB16200008

  View details for PubMedID 6578527

• DIFFERENTIAL-EFFECTS OF A LIST-LEARNING MNEMONIC IN 3 AGE-GROUPS GERONTOLOGY Rose, T. L., Yesavage, J. A. 1983; 29 (5): 293-298

  Abstract

  The effectiveness of a list-learning mnemonic was assessed across a wide range of ages. Young, middle-aged, and older adults attended a 3-day course in which a modified version of the method of loci was taught. Tests of free recall were administered at the beginning and end of the course. All three age groups displayed significantly better recall following instruction in the mnemonic than they did initially; however, the amount of improvement was less in older subjects than younger ones. These results, though indicating the mnemonic to be effective for young and old alike, suggest the development of encoding and retrieval deficits with age.

  View details for Web of Science ID A1983RE17000001

  View details for PubMedID 6618184

• DEVELOPMENT AND VALIDATION OF A GERIATRIC DEPRESSION SCREENING SCALE - A PRELIMINARY-REPORT JOURNAL OF PSYCHIATRIC RESEARCH Yesavage, J. A., Brink, T. L., Rose, T. L., LUM, O., Huang, V., ADEY, M., Leirer, V. O. 1983; 17 (1): 37-49

  View details for Web of Science ID A1983QQ74400004

• HISTORY OF DRUG-ABUSE AND DANGEROUS BEHAVIOR IN INPATIENT SCHIZOPHRENICS JOURNAL OF CLINICAL PSYCHIATRY Yesavage, J. A., Zarcone, V. 1983; 44 (7): 259-261

  Abstract

  The alcohol and drug use histories of 85 schizophrenic inpatients were examined in relation to measures of dangerousness while in hospital (physical and verbal assaults and episodes of seclusion and restraint). Stepwise multiple regression analyses showed significant relationships between each dangerousness measure and certain drug abuse history factors. Assault was most closely related to a drug abuse factor containing a history of blackout episodes and assaultiveness while drinking, whereas seclusion and restraint were most closely related to histories of becoming "loud" while on drugs. Overall measures of dangerousness appear to relate best to histories of becoming loud or assaultive while taking drugs.

  View details for Web of Science ID A1983QZ82900006

  View details for PubMedID 6863226

• MATHEMATICAL AND EMPIRICAL DEVELOPMENT OF A TEST OF MEMORY FOR CLINICAL AND RESEARCH USE PSYCHOLOGICAL BULLETIN Kraemer, H. C., Peabody, C. A., Tinklenberg, J. R., Yesavage, J. A. 1983; 94 (2): 367-380

  View details for Web of Science ID A1983RG39800007

• COMPUTERIZED PSYCHOLOGICAL-TESTS - TESTS OF ATTENTION, MEMORY AND MOTOR-PERFORMANCE IN GERIATRIC RESEARCH PRESSE MEDICALE Yesavage, J. A., Tinklenberg, J. R. 1983; 12 (48): 3170-3172

  Abstract

  The purpose of this paper is to present certain psychological tests adapted for computerized testing of subjects. The reasons why we have considered such tests are numerous: computerized test facilitate measurement of reaction time, testing conditions are standardized without reliance on performance of research assistants, data can be recorded on disc storage without paper handling, preliminary analyses and individual results can be available immediately after testing, simulation of certain real-life situations is possible, randomization of testing materials is facilitated. The computerized testing paradigms for use in gerontology to be discussed are: one an attention task of possible use in psychological research; the second a memory task aimed at basic cognitive psychological research and finally a performance task relating to a complex motor ability (flying). All provide inexpensive, reliable, quantified data and all use the same hardware. It is expected that this area will expand enormously and rapidly.

  View details for Web of Science ID A1983RX04000030

  View details for PubMedID 6228935

• Development and validation of a geriatric depression screening scale: a preliminary report. Journal of psychiatric research Yesavage, J. A., Brink, T. L., Rose, T. L., LUM, O., Huang, V., ADEY, M., Leirer, V. O. 1982; 17 (1): 37-49

  Abstract

  A new Geriatric Depression Scale (GDS) designed specifically for rating depression in the elderly was tested for reliability and validity and compared with the Hamilton Rating Scale for Depression (HRS-D) and the Zung Self-Rating Depression Scale (SDS). In constructing the GDS a 100-item questionnaire was administered to normal and severely depressed subjects. The 30 questions most highly correlated with the total scores were then selected and readministered to new groups of elderly subjects. These subjects were classified as normal, mildly depressed or severely depressed on the basis of Research Diagnostic Criteria (RDC) for depression. The GDS, HRS-D and SDS were all found to be internally consistent measures, and each of the scales was correlated with the subject's number of RDC symptoms. However, the GDS and the HRS-D were significantly better correlated with RDC symptoms than was the SDS. The authors suggest that the GDS represents a reliable and valid self-rating depression screening scale for elderly populations.

  View details for PubMedID 7183759

• RELAXATION TRAINING AND MEMORY IMPROVEMENT IN ELDERLY NORMALS - CORRELATION OF ANXIETY RATINGS AND RECALL IMPROVEMENT EXPERIMENTAL AGING RESEARCH Yesavage, J. A., Rose, T. L., Spiegel, D. 1982; 8 (3-4): 195-198

  View details for Web of Science ID A1982PR75100012

  View details for PubMedID 6762966

• A COMPARISON OF MULTIPLE AND SINGLE ELECTROCONVULSIVE-THERAPY JOURNAL OF CLINICAL PSYCHIATRY Berens, E. S., Yesavage, J. A., Leirer, V. O. 1982; 43 (4): 126-128

  Abstract

  In a retrospective study of 30 patients receiving either single ECT (N = 17) or multiple monitored ECT (N = 13), no difference in effectiveness or safety was seen between treatments. However, patients who received multiple monitored ECT had fewer sessions of general anesthesia and a significantly more rapid course of treatment.

  View details for Web of Science ID A1982NK44600001

  View details for PubMedID 7068541

• SOMATOFORM DISORDERS - DIFFERENTIATION OF CONVERSION, HYPOCHONDRIACAL, PSYCHOPHYSIOLOGIC, AND RELATED DISORDERS POSTGRADUATE MEDICINE Brink, T. L., Yesavage, J. A. 1982; 72 (1): 189-?

  View details for Web of Science ID A1982NW77700025

  View details for PubMedID 7088743

• EFFECT OF NAFRONYL ON LACTATE AND PYRUVATE IN THE CEREBROSPINAL-FLUID OF PATIENTS WITH SENILE DEMENTIA JOURNAL OF THE AMERICAN GERIATRICS SOCIETY Yesavage, J. A., Tinklenberg, J. R., Hollister, L. E., Berger, P. A. 1982; 30 (2): 105-108

  Abstract

  In a single-blind study, 12 men (mean age 63 years) with senile dementia were given nafronyl in a dosage of 100 mg eight times daily for a week, followed by 100 mg four times daily for 12 weeks. Rigorous clinical, laboratory and psychometric assessments revealed no toxicity and no significant effects on vital functions. In the cerebrospinal fluid, the ratio of lactate to pyruvate decreased--a finding consistent with an increase in the aerobic metabolism of glucose.

  View details for Web of Science ID A1982NF70700005

  View details for PubMedID 6173407

• SINGLE-CASE STUDY OF CLINICAL-RESPONSE TO HIGH-DOSE ERGOT ALKALOID TREATMENT FOR DEMENTIA - PRELIMINARY-REPORT GERONTOLOGY Yesavage, J. A., Tinklenberg, J. R. 1981; 27 (1-2): 76-78

  View details for Web of Science ID A1981LD65900011

  View details for PubMedID 7215823

• PHARMACOLOGICAL TREATMENT OF SENILE DEMENTIA IN THE USA AND EUROPE ANNALES MEDICO-PSYCHOLOGIQUES Yesavage, J. A., Tinklenberg, J. R., Berger, P. A., Masson, J. M., Martin, A., BOURGEOIS, M. 1981; 139 (1): 21-28

  Abstract

  This article is a review of the pharmacotherapy of senile dementia in Europe and the United States. Neurophysiological and neuropathological studies of demented elderly have suggested that a change from the attempt to improve cerebral blood flow to the attempt to improve neuronal intermediary (glycolytic) metabolism may be more fruitful therapeutically. Clinical studies of drugs which are direct smooth relaxant vasodilators are compared with studies of drugs claimed to improve neuronal intermediary metabolism in order to test this hypothesis. Comparison of 102 clinical studies of these two types of medications finds that a significant (p less than .005) number of studies of drugs with metabolic action claim positive results than to studies of drugs with vasodilatator action alone. Three new studies addressing questions of dose and spinal fluid effects of these medications are presented. Two studies provide evidence for the superiority of 6 mg/day of dihydroergotoxine mesylate to 3 mg/kg in the elderly. One study suggests that the medication naftidrofuryl, in doses of 800 mg/day and 400 mg/day, may have similar effects.

  View details for Web of Science ID A1981LS58000003

  View details for PubMedID 7020520

• DEVELOPMENT OF A GERIATRIC BEHAVIORAL SELF-ASSESSMENT SCALE JOURNAL OF THE AMERICAN GERIATRICS SOCIETY Yesavage, J. A., ADEY, M., Werner, P. D. 1981; 29 (6): 285-288

  Abstract

  Described is the development of a self-rating geriatric behavioral scale modeled after the Sandoz Clinical Assessment-Geriatric (SCAG). This new Self-Assessment Scale-Geriatric (SASG) provides a valid and reliable measure of behavioral pathologic changes for the selective screening of elderly patients who manifest mile to moderate symptoms of dementia. Further use and refinement of this new measuring device are required to confer on it the maximum possible accuracy.

  View details for Web of Science ID A1981LT40500009

  View details for PubMedID 7195410

• DESIGN ASPECTS OF STUDIES OF DRUGS CLAIMED TO IMPROVE COGNITIVE FUNCTION IN THE AGED JOURNAL OF PSYCHIATRIC TREATMENT AND EVALUATION Yesavage, J. A., ADEY, M. 1981; 3 (6): 545-549

  View details for Web of Science ID A1981MT92700008

• ACUTE PHENCYCLIDINE (PCP) INTOXICATION - QUANTITATIVE URINE LEVELS AND CLINICAL MANAGEMENT AMERICAN JOURNAL OF PSYCHIATRY Walker, S., Yesavage, J. A., Tinklenberg, J. R. 1981; 138 (5): 674-675

  View details for Web of Science ID A1981LN47000021

  View details for PubMedID 6112883

• CHOLINE CHLORIDE TREATMENT OF MEMORY DEFICITS IN THE ELDERLY AMERICAN JOURNAL OF PSYCHIATRY Mohs, R. C., Davis, K. L., Tinklenberg, J. R., Hollister, L. E., Yesavage, J. A., KOPELL, B. S. 1979; 136 (10): 1275-1277

  Abstract

  Eight elderly patients with mild memory impairment were given choline chloride, a drug that increases brain acetylcholine concentrations. After 16 g/day of choline for 7 days, average memory performance was not different from performance during pre- and postcholine placebo treatment, although the patient with the poorest baseline performance improved considerably on choline.

  View details for Web of Science ID A1979HN59900005

  View details for PubMedID 484722

• VASODILATORS IN SENILE DEMENTIAS - REVIEW OF THE LITERATURE ARCHIVES OF GENERAL PSYCHIATRY Yesavage, J. A., Tinklenberg, J. R., Hollister, L. E., Berger, P. A. 1979; 36 (2): 220-223

  Abstract

  The rationale for the use of vasodilators in the aged has changed from the attempt to increase cerebral blood flow to the attempt to improve cerebral metabolism. Review of 102 studies of eight vasodilators showed that significantly more controlled studies claimed practical clinical benefit from drugs supposed to improve neuronal intermediary metabolism with secondary vasodilatation than from drugs supposed to have only vasodilator action (P less than .005). Studies of both classes of drugs often suffered from poor study design, inappropriate and inconsistent application of outcome measurements, as well as negative bias due to selection of severely demented subjects. Future studies should be placebo-controlled investigations of drugs with primarily metabolic action, address questions of dose and time response, consistently use appropriate outcome measurement, and concentrate on the elderly in whom cognitive improvement is possible.

  View details for Web of Science ID A1979GL00500012

  View details for PubMedID 420543