1. From the UCL Institute of Neurology, Queen Square, London, United Kingdom (A.C., H.R.J., Z.F., D.J.W.); Wolfson Brain Imaging Centre (Y.T.H., F.I.A., T.D.F.), Division of Anaesthesia (D.K.M.), and Stroke Research Group, Department of Clinical Neurosciences (E.A.W., J.-C.B.), University of Cambridge, Cambridge, United Kingdom; and INSERM U894, Centre Hospitalier Sainte-Anne, Sorbonne Paris Cité, Paris, France (J.-C.B.).