Fig. 5.

Typical EMG activation patterns recorded from different regions of experimental IFIB muscles and corresponding probability of activation histograms (control SART:filled; experimental muscles: shaded).A, B, Activation patterns recorded from the “slow” (A) and “fast” (B) regions of the same experimental IFIB muscle paired with the contralateral control SART muscle. C, An example of another activation pattern recorded from the “fast” region of another experimental IFIB muscle. The adjacent probability of activation histograms shows the probability (y-axis) of a given muscle being active at various times before or after the onset of each bursting cycle (see Fig. 2 for abbreviations).