Great advances have been made in recent years towards a better understanding of the healthy brain and the physical basis of psychiatric disorder. This text brings together contributions from leading international authorities to provide a multidisciplinary overview of this area. Its broad coverage ranges from epilepsy and schizophrenia to basal ganglia disorder and brain lesions. In many cases, a clinically oriented chapter is paired with one which describes the basic science which underpins it and considerable attention is given to the impact of the new technologies - structural and functional neuroimaging. In highlighting the basic pathophysiological mechanisms of multifaceted clinical manifestations, this book serves as a practical review of current neuropsychiatry. It should be of interest to clinicians, researchers and students from neuroscience through to neuropsychology and psychiatry.