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. Author manuscript; available in PMC: 2015 Jun 8.
Published in final edited form as: Brain Res Bull. 2008 Oct 23;78(0):69–74. doi: 10.1016/j.brainresbull.2008.09.013

Fig. 1.

Fig. 1

Diagram illustrates functionally similar cortical and thalamic regions projection to the same striatal area. Note the cortico-thalamic projection is reciprocal. The caudal motor-related areas of the frontal lobe (primary motor area, M1; caudal premotor cortex, PMc; supplementary motor area, SMA; and caudal cingulate motor area, CMAc) are primarily connected with the ventral thalamic nuclei VPLo and VLo. These cortical and thalamic regions send converging efferents projections to the dorsolateral and dorsocentral putamen. In contrast, the rostral motor-related areas of the frontal lobe (rostral premotor cortex, PMr; pre-supplementary motor area, PreSMA; and rostral cingulate motor area, CMAr) are primarily connected with the ventral thalamic nucleus VApc. These cortical areas and the VApc send converging efferents projections to the dorsolateral caudate nucleus and to the rostral putamen. Both rostral and caudal premotor areas, and CMAc are connected with the ventral thalamic nucleus VLc. These cortical areas and the VLc send efferents projections to the dorsolateral caudate n.