
Neuromodulation Lab Team
The Neuromodulation Lab is fortunate to have many great current and former team members to advance our work. The lab includes faculty, program administrators, clinical coordinators, postdoctoral fellows and graduate and undergraduate students. We are also fortunate to have many collaborators across NYU Langone and beyond.
Principal Investigators

Leigh Charvet, PhD
Dr. Charvet is a professor in the Department of Neurology, director of NYU Langone’s tDCS Program, and director of Multiple Sclerosis Comprehensive Care Center Research. She is a licensed clinical neuropsychologist with more than 30 years of clinical research experience. She received her doctorate from Vanderbilt University and completed her ABPP-ABCN certified internship and fellowship in both adult and pediatric training. Following her fellowship, she joined the Stony Brook Medicine neurology faculty as an assistant professor. She also has prior experience in the pharmaceutical sector with a position in medical and clinical affairs supporting projects addressing a wide range of disorders of the central nervous system. The focus of her career has been to advance the understanding of and treatment options for the burden of neurological disease, including cognitive and motor impairments and symptoms such as fatigue and depression. She has worked to develop telehealth options for interventions that can lead to improved quality of life. She has led a large research program on the use of noninvasive brain stimulation focused on the at-home use of transcranial direct current stimulation (tDCS) to evaluate its clinical benefit and to provide tDCS tele-treatment as innovative care.

Giuseppina Pilloni, PhD
Dr. Pilloni is an assistant professor in the Department of Neurology. She received her doctorate in industrial engineering from the University of Cagliari (Italy) in 2020 and completed a fellowship at NYU Grossman School of Medicine in Clinical Neuromodulation. She joined the Neuromodulation Lab sustaining her long-term interest in studying mechanisms of action and effects of noninvasive brain stimulation techniques. Dr. Pilloni previously studied the use of motor cortical stimulation combined with motor training to restore and preserve function in people with multiple sclerosis. In the Neuromodulation Lab, as a biomedical engineer, she focuses on optimizing noninvasive brain stimulation, specifically tDCS, and wearable technologies for at-home use. Her current research focus is on understanding the mechanism of action of tDCS and developing appropriate dosing parameters and biomarkers for its use in treating the symptoms of neurological diseases such as motor and cognitive impairments, fatigue, and depression. She also has extensive experience in the use of wearable and digital technologies for quantitative and objective human movement analysis and in bio-signals processing (for example, HR signal, and imaging) in a variety of patient populations. Alongside her research contributions, Dr. Pilloni is an active mentor to students and junior researchers in the lab. Outside of work, Dr. Pilloni is a former professional basketball player, and she remains an avid sports enthusiast.
tDCS Program Coordinators

Allan George, MA
Allan oversees the clinical tDCS program and neuropsychology services. He earned a bachelor’s degree in psychology from Stony Brook University and went on to complete a master’s degree in psychology at New York University, followed by a second master’s degree in healthcare administration, also from NYU. Prior to joining the Neuromodulation Lab in 2018, Allan worked as a research coordinator at a neuroimaging lab at the NYU Epilepsy Center, where he studied hippocampal volume changes in patients with epilepsy, explored emerging imaging techniques, and conducted neuropsychological assessments to evaluate the effects of chronic traumatic encephalopathy (CTE) in former football players.
Outside of work, Allan enjoys traveling, aiming for at least one major international trip each year, and has recently returned to long-distance running, currently training for several upcoming races.

Shayna Pehel
Shayna is a research coordinator who graduated with a BS in integrative neuroscience from SUNY Binghamton in 2019. Having always been intrigued by the biopsychosocial basis of health and healthcare, she became involved in clinical research at NYU Langone Health. Previously, she worked as a research data associate in the Department of Psychiatry studying sleep, aging, and risk for Alzheimer’s disease. She began working at the MS Center in 2022 and has thoroughly enjoyed administering cognitive assessments and providing tDCS treatment to research participants. She is a certified ECG technician and loves to provide a safe and trusting space for those in need. Her goal is to obtain a higher education degree in either neuropsychology or psychiatric nursing. Shayna volunteers with rescue dogs on the weekends, enjoys shopping for little trinkets, and a fun fact is that she has never eaten a hamburger.
Postdoctoral Fellows

H. Deniz Kocas
Deniz Koçaş is a Neuropsychology Postdoctoral Fellow at NYU Langone Health’s Department of Neurology. She completed her PhD in Clinical Psychology at The New School for Social Research (NSSR) and a Predoctoral Psychology Internship at NYU Langone Rusk Rehabilitation. Currently, she focuses on neuropsychological assessment of patients seeking cognitive evaluation and conducts research related to cognitive and mental health. In addition, Deniz has a strong interest in women’s health and clinical health psychology more broadly. Her dissertation – focused on endometriosis and stigma – received awards from APA’s Division 38 (Health Psychology), Behavioral Database Measurement Services, and NSSR. Throughout her PhD, Deniz wrote for the scientific newsletter of an endometriosis-focused non-profit organization to make mental health research accessible to patients. She also organized annual patient and medical conferences to support the education of patients, scientists, and healthcare providers within the endometriosis community. Before embarking on her clinical psychology training, Deniz worked as a pharmacist within the National Health Service in England and the pharmaceutical sector in Belgium and Türkiye. Her roles involved advocating for policies to increase access to medication and providing capacity-building to patient-focused non-profit organizations. Outside of her professional activities, Deniz enjoys yoga, swimming, travelling, and trying different cuisines.

Leila Simanijoni (Simani), PhD
Leila Simanijoni (Simani), PhD, is a Postdoctoral Fellow in the Department of Neurology at NYU Langone Health. She earned her doctorate in Neuroscience and brings over a decade of experience in neuroscience and clinical research. Her work focuses on neurological disorders, cognitive function, and translational research, aiming to bridge laboratory discoveries with meaningful treatment improvements.
She has authored over 40 peer-reviewed publications and is skilled in simplifying complex medical and scientific concepts for diverse audiences. In addition to her research, she has contributed to medical writing and education by preparing scientific content, mentoring students, and supporting patient-focused initiatives.
Outside of her professional work, she enjoys hiking, cooking, traveling, and exploring diverse cuisines, drawing inspiration from the connections between culture, health, and wellbeing."
Research Staff

Benjamin Babaev
Benjamin joined the Neuromodulation Lab in 2025 after graduating from the City College of New York with a bachelor’s in biomedical engineering. During his undergraduate years he focused on neural engineering and medical device research. He plans on attending medical school in the future. In his free time, Benjamin enjoys walking and biking around the parks in Queens.

Matthew Brecher
Matthew joined the Neuromodulation Lab in 2025 after completing the postbaccalaureate premedical program at New York University. Before his premedical journey, Matthew graduated from Duke University in 2020 with a bachelor’s degree in computer science. He then worked in healthcare consulting for three years. This position, which included working on cutting-edge therapies in clinical development and various neurological disorders, sparked his interest in medicine. Prior to joining the Neuromodulation Lab, he was a research volunteer in the NYU Grossman School of Medicine Division of Neurogenetics. Matthew has also worked as a vascular surgery medical assistant and volunteered at Mount Sinai and NewYork-Presbyterian/Weill Cornell Hospitals. He hopes to enter medical school in the future. In his free time, Matthew enjoys going to the gym, traveling, and exploring different New York City restaurants.

Lizzy Quilty
Lizzy is an undergraduate student at Lafayette College, where she is studying neuroscience and pursuing a bioengineering minor. Obtaining her New York State EMT license in 2022, Lizzy confirmed her interest in direct patient care, and hopes to apply to medical school or physician assistant school after graduation. In addition to her studies, Lizzy enjoys swimming, trying new restaurants, and going for long drives along Ocean Parkway.

Caitlin Rogers
Caitlin joined the Neuromodulation Lab in 2025. She is currently a research coordinator at NYU Langone’s Transplantation and Cellular Therapy group, where she facilitates experimental CAR-T trials in hematologic malignancies, Phase 1 studies, thoracic oncology, systemic lupus erythematosus (SLE), bone marrow transplant (BMT), and melanoma. Prior to joining NYU, she worked as a research coordinator at Columbia University, focusing on clinical research in melanoma, sarcoma, and thoracic cancers. In 2022, she earned a bachelor's degree in psychology from Fordham University. Caitlin plans to pursue a doctoral degree in Neuropsychology and aims to contribute to the field through both research and clinical practice. In her free time, she likes going to the gym, yoga, reading, and cooking new meals.
Students

Daniella Cortez
Daniella joined the Neuromodulation Lab in 2025 as a student intern. She is an undergraduate at New York University, pursuing a bachelor’s degree in Neuroscience and Child and Adolescent Mental Health Studies. Her passion for psychology and biology drives her interest in neuroscience and her goal to pursue a career as an MD or PA after graduation. In addition to her lab work, Daniella mentors younger students in science to promote equitable education and works as an EMT. Originally from New Jersey, she enjoys exploring new places, swimming at the beach, and cooking.

Josh Geel
Josh joined the Neuromodulation Lab as a clinical research intern at the start of 2024. He is a double honors student currently working toward graduating early with a bachelor's degree in psychology at New York University. On the pre-health track, Josh has extensive healthcare experience, including from his home state of Massachusetts, and takes additional prerequisite classes at Columbia University. Josh also currently works as a teaching assistant and as a crisis counselor. In his free time, Josh enjoys going to the gym, watching movies, and traveling.