ABSTRACT

Superfi cially at least, most symptoms of disorders of the basal ganglia appear to be disorders of motor coordination rather than of behavioral selection. As noted above, this fact poses a major problem if, as explained here, it is proposed that the basal ganglia are concerned with behavioral, attentional, and motivational selection, rather than with motor coordination. To resolve this serious diffi culty some general comments need to be made before embarking on a more detailed discussion.