Fifteen chapters, written by experts in the field, summarize current studies that involve receptors and ligands in neurological disorders. The advance in the study of receptors in general enables investigators to explore the mechanism of action of psychotropic drugs and to minimize their side effects. It will lead to the study of molecular events and an understanding of the nature and cause of the various diseases and to more accurate diagnoses that may give more effective therapeutic treatments. Topics discussed include the role of central dopamine in movement disorders, aluminum and Alzheimer's disease, receptor binding in the kindling model of epilepsy, and cholinergic neurons in Huntington's disease. The chapters have been carefully edited for a wide appeal to pharmacologists, neurologists, and neuroscientists.