Abstract
“The motor individual is driven from two sources. The world around it and its own inner world within” (Sherrington, 1940). It is now known that one of these internal driving sources is the basal ganglia, although, as recently reiterated by Marsden (1980) the precise way in which this brain structure is engaged in motor control still eludes us. The abnormal brain movements observed in patients with basal ganglia disease is plain enough, and it is this basic fact which associates the basal ganglia with some aspect of motor control. However, if we are ignorant of how the basal ganglia function, or indeed whether the basal ganglia is associated with sensory information and cognitive functions (see discourse between Marsden, 1980 and Gunilla et al., 1981), then we are even more ignorant of the pathways by which basal ganglia information is passed to other areas of the brain, including those areas concerned with the regulation of inner motivations and drives.
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