Dr. Hallett is an NIH Distinguished Investigator Emeritus having recently retired as the Chief of the Human Motor Control Section, NINDS, NIH, Bethesda. He obtained his MD at Harvard Medical School, had a medical internship at the Peter Bent Brigham Hospital, and a residency in Neurology at the Massachusetts General Hospital. He had fellowships in biophysics at the NIH and clinical neurophysiology at the Institute of Psychiatry in London. From 1976 to 1984, Dr. Hallett was the Chief of the Clinical Neurophysiology Laboratory at the Peter Bent Brigham Hospital, which became the Brigham and Women’s Hospital. He progressed at Harvard Medical School to Associate Professor of Neurology, and then in 1984, Dr. Hallett went to NINDS. He is currently the immediate Past-President of the Functional Neurological Disorder Society. Dr. Hallett is also remote past President of the International Parkinson and Movement Disorder Society and the International Federation of Clinical Neurophysiology and past Editor-in-Chief of Clinical Neurophysiology. He has won many awards including, in October 2019, the World Federation of Neurology Medal for Contributions to Neuroscience. His work mainly deals with principles of motor control and the pathophysiology of movement disorders. Recently, a focus of his work has been Functional Neurological Disorders.