A large number of studies have used eye movements as an experimental tool to investigate brain function, in particular to evaluate cognitive control processes like working memory and attention. Unfortunately, our understanding of the functional organisation of the eye movement system is incomplete, and the differences unknown. This research will use multimodal brain imaging techniques to determine the extent to which brain regions and pathways are involved in, or crucial to eye movement tasks considered to reflect these cognitive processes and to identify the brain differences that predict performance on these tasks.