School of Medicine


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  • Daniel Alves Neiva Barbosa

    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.

  • Zhijuan Cao

    Zhijuan Cao

    Postdoctoral Research Fellow, Neurosurgery

    Current Research and Scholarly Interests My current research focuses on:
    1) using optogenetic strategies to stimulate targeted neurons for brain repair after stroke.
    2) detecting the neural circuit and molecular mechanisms underlying stroke recovery.

  • Hansen Chen

    Hansen Chen

    Postdoctoral Research Fellow, Neurosurgery

    Current Research and Scholarly Interests Immune and Nervous Systems Interaction; Ischemic Postconditioning; Optogenetics

  • Subhamoy Das

    Subhamoy Das

    Postdoctoral Research Fellow, Neurosurgery

    Current Research and Scholarly Interests Enteric Nervous System

  • Jordan Farrell

    Jordan Farrell

    Postdoctoral Research Fellow, Neurosurgery

    Current Research and Scholarly Interests I aim to better understand hippocampal network function in both physiology and epilepsy using in vivo imaging, optogenetics, and electrophysiology.

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