William J. Schwartz is Professor of Neurology at the University of Massachusetts Medical School. He received his M.D. (1974) and neurology residency training (1978–1981) at the University of California, San Francisco, completed a research fellowship at the National Institute of Mental Health (1975–1978), and was on the faculties of Harvard Medical School and the Massachusetts General Hospital (1981–1986) before moving to the University of Massachusetts. His research program has...