1. From the Department of Neurology, Cognitive Behavioral Neurology Unit, Functional Neurology Research Group, Massachusetts General Hospital, Harvard Medical School, Boston (SPG, NM, BW, SSY, DLP); the Department of Psychiatry, Neuropsychiatry Unit, Massachusetts General Hospital, Harvard Medical School, Boston (SPG, DLP); the Department of Physical Therapy, Massachusetts General Hospital, Harvard Medical School, Boston (JM, JC); the Department of Neurology, Movement Disorders Unit, Massachusetts General...