ABSTRACT
Apraxia involves a disruption in the performance of gestures, both transitive (with objects) and intransitive (without objects), and/or more complex sequential motor acts, such as putting a letter into an envelope. In examining this disorder we do not describe the traditional classifications (e.g., ideational, ideomotor, and limb-kinetic apraxias) as these are fully described in this volume and elsewhere (Heilman, 1979; Roy, 1982). Rather, consideration is given to the types of errors observed and the four major views as to the nature of apraxia. Discussion then focuses on the work by Roy (1978, 1981, 1982, 1983) and others (Luria, 1980), which considers that apraxia results from a disruption to a functional neurobehavioural system.
