Contemporary research on the links between brain, mind, and human behavior has revealed the key role of the frontal-subcortical circuits in a wide range of neuropsychiatric syndromes and disorders. This authoritative volume reviews current knowledge on the anatomy of these circuits, their connections to other brain regions, and their influences on motor, cognitive, affective, and behavioral functioning. Specific clinical problems discussed include Parkinson's disease and other movement disorders, obsessive-compulsive disorder, ADHD, schizophrenia, and addictive disorders. Featured are a wealth of informative illustrations, with 8 pages in full color.