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M1 neurons that project to the PMd (black circles) or to the PMv (open circles). The region enclosed by the dashed box on the left is enlarged on the right. Double-labeled neurons (gray circles) are indicated only in the enlargement. Note the intermingling of the two types of neurons and their common laminar origin. The level of this section is marked in Figure 5. CgS, Cingulate sulcus; CS, central sulcus.
