Patients with Parkinson’s disease, cerebellar ataxia and cerebral palsy have difficulty with many everyday tasks which are guided by vision, such as walking. Previous research by this team, which was funded by Action Research, indicated the difficulty that these patients have in getting around is partly caused by their failure to look accurately at the place they want to step. In addition, cerebellar ataxia patients were shown to improve their mobility by rehearsing their eye movements before walking. This project will seek to extend the benefits already seen in cerebellar patients to those suffering from Parkinson’s disease and cerebral palsy. The researchers will use a computer controlled walkway and eye tracking system to measure the accuracy of the movement of patients taking part in a number of different tasks. By improving the way their eyes move by rehearsal, patients should be able to improve their general performance. The team will also study how long any improvement lasts and whether the improvement is task specific.