1. From the Centre for Magnetic Resonance (S.F., S.E.R., M.W., M.G., A.L.J., K.L.M., R.G., M.W.S., J.B.C.), the Department of Speech Pathology and Audiology (C.M.P.), and the Department of Medicine (J.B.C.), University of Queensland, Brisbane, Australia; the Translational Medicine and Technology Group (J.S., J.B.), GlaxoSmithKline, Cambridge, United Kingdom; the Academic Department of Psychiatry (J.S.), University of Cambridge, Cambridge, United Kingdom; and the Sobell Department of Motor Neuroscience...