School of Medicine
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Daniel Alves Neiva Barbosa
Postdoctoral Research Fellow, Neurosurgery
Bio Daniel A. N. Barbosa, M.D., is a Research Fellow working under the mentorship of Dr. Casey H. Halpern (Assistant Professor of Neurosurgery) and Dr. Jennifer McNab (Associate Professor of Radiology). He received his medical degree from the Federal University of the State of Rio de Janeiro in 2018. During his clinical education, Dr. Barbosa followed several renowned neurosurgeons and neurologists, and had a large experience with neurological and psychiatric patients. He developed great interest for the investigations of neurosurgical techniques to improve brain function. The invaluable experiences with these patients shaped a great interest on the investigations of neurosurgical techniques to improve brain function. His clinical and academic training together with the research experience provided him with an excellent background in multiple biological disciplines including neurosurgery, neurology, psychiatry, and neuroimaging. He also had the opportunity of joining a team of neurosurgeons and clinical scientists in the largest clinical study on deep brain stimulation for morbid obesity to date. With Drs. Ricardo de Oliveira-Souza, Alessandra Gorgulho, and Antônio De Salles (UCLA Emeritus Professor of Neurosurgery), Dr. Barbosa has led a systematic review on the topic. He also worked on the development and the publishing of this study protocol as well as that of a clinical trial of a novel neurosurgical therapy for depression. During his graduate career, these clinical investigations generated several peer-reviewed publications, book chapters, and conference presentations.
Now, his investigation is contributing to the ongoing first-in-human early feasibility trial of closed-loop neuromodulation of the nucleus accumbens for Loss of Control Eating. He is also working on the design of innovative, invasive clinical studies for conditions like Obsessive Compulsive Disorder. He is committed to investigate cutting-edge neuroimaging and neurophysiology modalities, including diffusion magnetic resonance imaging, as well as novel brain-clearing techniques to improve stereotactic targeting neuromodulation for pathological impulsivity, a pervasive symptom in a wide range of neurological and neuropsychiatric disorders.
Clinical Professor, Psychiatry and Behavioral Sciences
Bio Dr. Bhati is a board certified neuropsychiatrist with expertise in psychiatric diagnosis, psychopharmacology, and neuromodulation. He completed postdoctoral research studying transcranial magnetic stimulation (TMS) evoked potentials in schizophrenia and was a principle investigator for the DSM-5 academic field trials. His research experience included roles as an investigator in the first controlled clinical trials of deep brain stimulation and low field synchronized TMS for treatment of depression. His current interests include studying TMS-evoked potentials as biomarkers for neuropsychiatric disorders, augmented-reality TMS, closed-loop responsive neurostimulation for treatment of impulse and fear-related disorders, and magnetic resonance guided focused ultrasound for treatment-resistant obsessive compulsive disorder and depression.
Nikolas Blevins, MD
Larry and Sharon Malcolmson Professor in the School of Medicine and Professor, by courtesy, of Neurosurgery at the Stanford University Medical Center
Current Research and Scholarly Interests Inner ear microendoscopy -- Developing techniques for minimally-invasive imaging of inner ear microanatomy and neural pysiology. Applications include improved cochlear implant development, inner ear regenerative techniques, inner ear surgery, and auditory physiology.
Microsurgical robotics -- Developing scalable microsurgical instrumentation and robotic techniques for use in head and neck surgery.
Surgical Simulation -- Immersive environment for temporal bone surgical simulation.
Clinical Instructor, Neurosurgery
Current Research and Scholarly Interests Dr. Mandel obtained his medical degree from the University of São Paulo Medical School, Brazil. He received the ?Prof. Dr. Edmundo Vasconcelos Award? as the best student on all surgical disciplines upon completion of medical school. He subsequently completed his neurosurgical residency at the Hospital das Clinicas of University of Sao Paulo Medical School, Brazil.
After his residency, Dr. Mauricio started a busy private practice at Hospital Israelita Albert Einstein, Sao Paulo, Brazil.
His clinical and research interests are focused on minimally invasive neurosurgery. Dr. Mauricio attended a Ph.D. program at the University of Sao Paulo, Brazil, where he discussed a doctoral thesis entitled ?Employment of minimally invasive neurosurgical techniques for treatment of unruptured brain aneurysms of the anterior circulation.? During his Ph.D. thesis, he described an innovative minimally invasive approach for the treatment of middle cerebral artery aneurysms (transpalpebral ?eyelid? approach). He has published several peer-reviewed articles and has presented his work at different international conferences.
As Clinical Instructor at Stanford, Dr. Mauricio is currently concentrating on gaining operative exposure to cerebral revascularization procedures with Dr. Gary Steinberg.
Dr. Mandel, along with his wife Suzana, enjoys running, hiking and traveling. He also enjoys playing the cello. He has been a cellist in several university symphony orchestras in Sao Paulo.
Helen Bronte-Stewart, MD, MS
John E. Cahill Family Professor, Professor of Neurology and, by courtesy, of Neurosurgery at the Stanford University Medical Center
Current Research and Scholarly Interests My research focus is human motor control and brain pathophysiology in movement disorders. Our overall goal is to understand the role of the basal ganglia electrical activity in the pathogenesis of movement disorders. We have developed novel computerized technology to measure fine, limb and postural movement. With these we are measuring local field potentials in basal ganglia nuclei in patients with Parkinson's disease and dystonian and correlating brain signalling with motor behavior.
Marion S. Buckwalter, MD, PhD
Professor of Neurology and of Neurosurgery at the Stanford University Medical Center
Current Research and Scholarly Interests The goal of the Buckwalter Lab is to improve how people recover after a stroke. We use basic research to understand the cells, proteins, and genes that lead to successful recovery of function, and also how complications develop that impact quality of life after stroke. Ongoing projects are focused on understanding how inflammatory responses are regulated after a stroke and how to make recovery faster and better after stroke.