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A large mass of striped white and grey matter of the forebrain or prosencephalon in front of and around the thalamus in each cerebral hemisphere, the afferent part of the basal ganglia, mainly involved in movement planning and control and habit formation. It includes the putamen (connected mainly to the primary somatosensory cortex, the primary motor cortex, and the supplementary motor area) and the caudate nucleus (connected to widespread cortical association areas). Often confused with the corpus striatum, of which it is a part, or the striate cortex, to which it is unrelated. Also called the neostriatum. [From Latin striatus streaked, from stria a furrow, groove, or a flute of a column]

Subjects: Psychology.

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