I am interested in understanding human brain network organization from neuroimaging data in health and disease. My recent methodological work has focused on graph theory to measure aspects of brain network topology. I am also interested in better neuroscientific understanding and treatment of psychiatric disorders. I am currently leading a consortium funded by the Wellcome Trust and pharmaceutical companies (GSK, Janssen, Lundbeck) - the Neuroimmunology of Mood Disorders and Alzheimer's Disease (NIMA) consortium - which is exploring immune mechanisms and therapeutics for depression and dementia.