The purpose of our research is to further our knowledge of how various brain areas contribute to the initiation, or suppression, of, eye movements. We can measure eye movements very precisely in the laboratory using a video-based eye tracker that is completely non-invasive. We investigate behaviour of control participants and patients with neurological and psychiatric disorders to identify specific deficits in eye movement control. We also use functional brain imaging (fMRI) to measure the brain activity while subjects make eye movements and we use this information to infer how the system works to control the behaviour in controls and patients. Many brain areas are interconnected into a vast network to control eye movements, but by combining the knowledge we gain from the behavioural and fMRI experiments we hope to better understand how problems within this neural network lead to the deficits in neurological and psychiatric patient groups.