Diagrams showing motor regions of the brain. Basal ganglia are a group of three brain regions, or nuclei--caudate, putamen, and globus pallidus. Figure 2.6a is a three-dimensional view showing the location of those nuclei in the brain. Figure 2.6b shows those structures in a vertical cross-sectional view. The major output pathways of the basal ganglia arise from the globus pallidus and pars reticulata of the substantia nigra. Their main target is the thalamus. SOURCE: Figure 2.6a is reprinted from Principles of Neural Science, 2nd ed., 1985 (E.R. Kandel and J.H. Schwartz, eds.), with permission from the copyright holder, Appleton and Lange.
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