Viral injection sites along the principle sulcus and central sulcus in macaques. (A) Lateral view of the primate brain. (B) Enlargement of the area enclosed by the larger dashed line in A. Solid circles represent needle entry of the viral injections. (C) Enlargement of the area enclosed by the smaller dashed line in A. Each letter indicates a body part of which movement was evoked by intracortical microstimulation of the corresponding site. ArS, superior limb of the arcuate sulcus; CS, central sulcus; D, dorsal; IpS, intraparietal sulcus; LS, lateral sulcus; PS, principal sulcus; STS, superior temporal sulcus.