Professor O'Sullivan holds a joint appointment as a Professor of Neuroscience at QBI and as Director of the Mater (clinical) Centre for Neuroscience. Professor O'Sullivan is an eminent neurologist with extensive clinical research experience. He will be integral in establishing the clinical interface between QBI clinicians, researchers, and the wider community. Previously, Professor O'Sullivan has been the strategic lead for stroke at King's Health Partners, an Academic Health Sciences Centre connecting the University and three major NHS Foundation Trusts in South London. Professor O'Sullivan has substantial experience in the application of diffusion MRI, tractography and functional MRI to understand the interaction between focal damage and other processes involved in ageing and early cognitive decline, viewed from a network perspective.