1Neuroscience and Trauma, Queen Mary University of London, London, United Kingdom, 2University of British Columbia, Division of Neurology, Department of Medicine, Vancouver, BC, Canada, 3Neuroimaging Analysis Centre, Department of Brain Repair and Rehabilitation, London, United Kingdom, 4Clinical Physics, Barts Health Trust, London, United Kingdom, 5Department of Neurology, Barts Health Trust, London, United Kingdom