Figure 9.

Long-latency reflexes during cerebellar damage. (A) Cartoon of evoked activity from the shoulder extensor by healthy subjects. Panels on the left indicate responses to shoulder displacement caused by a shoulder flexor torque (red) and an elbow extensor torque (blue). Panels on the right indicate responses to elbow displacement caused by a shoulder + elbow flexor torque (red) and an shoulder + elbow extensor torque (blue). (B) Cartoon of predicted shoulder muscle activity if cerebellar damage eliminates the ability to integrate multi-joint muscle. (C) Group average of shoulder extensor muscle activity by a group of healthy subject. (D) Group average of shoulder muscle activity by a group of subjects suffering cerebellar damage. Figure modified with permission from Kurtzer et al. (2013).