1 From the Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience (M.F.), Neurology Unit (M.F., R.B.), Neurorehabilitation Unit (M.F., R.B.), and Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milan, Italy; and Vita-Salute San Raffaele University, Milan, Italy (M.F., R.B.).