Apraxia is a symptom of cerebral lesions that has puzzled clinicians and researchers for some 100 years. It has engendered many fascinating descriptions and a wide diversity of conflicting theoretical accounts. This book is the first one that gives a comprehensive account of clinical and experimental findings on all manifestations of apraxia as well as of the history and the philosophical underpinning of theories on apraxia. The review of contemporary evidence is illustrated with vivid descriptions of clinical examples. The historical part reveals early precursors of the concept of apraxia in