Final answer:
The globus pallidus externa (GPe) is part of the indirect pathway in the basal nuclei that inhibits the thalamus and decreases activity in the cerebral cortex, resulting in less motor activity.
Step-by-step explanation:
The globus pallidus externa (GPe) is part of the indirect pathway in the basal nuclei that is involved in movement control. The GPe receives input from the striatum and sends projections to the subthalamic nucleus (STN). The STN then projects to the globus pallidus interna (GPI) which inhibits the thalamus, resulting in decreased activity in the cerebral cortex and therefore less motor activity.