Figure 4.

The organizations of PPC in galagos 03-74R (A) and 04-47R (B,C) are shown on dorsolateral views of the cortical surface of the right hemisphere. A: In case 03-74R, complex forelimb movement zones for reaching (light blue), hand-to-mouth (dark blue), and defense (green) are marked with colored lines in dorsal PPC. Reaching movements were evoked from two spatially separated cortical zones in this case. Zones of complex face defensive (yellow) and aggressive (purple) movements as well as the small zone of eye movements (orange) are marked in the ventral PPC. Large black dots in the anterodorsal portion of the cortex represent simple shoulder movements evoked with long-train stimulation. Smaller black dots in the frontal cortex represent sites of simple shoulder movements evoked by short-train stimulation. B: At left, three zones of complex forelimb movements and small medial zone of complex hindlimb movements (gray) are marked in the dorsal PPC of case 04-47R. In the ventral PPC, stimulation of numerous cortical sites evoked aggressive face movements (purple), and stimulation of a few more caudal sites evoked defensive face movements (yellow). C: At right, stimulation sites along the dorsal bank of IPS evoked mostly defensive (green) and hand-to-mouth movements (blue). bi, Bilateral; E, ear; FL, forelimb; FSp, posterior frontal sulcus; IPS, intraparietal sulcus; LS, lateral sulcus; sh, shoulder. Conventions as in Figures 2 and 3. Scale bars = 1 mm.