Abstract

This chapter describes the isotope injections placed in the motor cortex of six rhesus monkeys. It analyzes the resulting association, striatal, commissural, and subcortical fiber trajectories, as well as the cortical and subcortical terminations. The injections were in the frontal operculum in the precentral aspects of areas 1 and 2, ventral area 4 in the face representation, area 4 behind the arcuate spur in the hand representation, the dorsal precentral gyrus in the trunk representation region of area 4, the dorsal part of area 4 in the foot representation, and the medial part of the superior frontal gyrus, rostral area MII, involving the face representation.