FIGURE 11-3 Premotor Control On a task requiring both hands, the healthy monkey can push the peanut out of a hole with one hand and catch it in the other, but 5 months after receiving a lesion of the premotor cortex, the brain-injured monkey cannot.

Information from C. Brinkman (1984). Supplementary motor area of the monkey’s cerebral cortex: Short- and long-term effects after unilateral ablation and the effects of subsequent callosal section. Journal of Neuroscience, 4, p. 925.