Fig. 3.

Normalized mean EMG magnitude and burst duration of MG and PL before and 1–3 weeks after denervation of SO and LG muscles during level and slope walking. Mean burst EMG values were normalized to the maximum mean burst EMG found in each cat across all experimental conditions. * p < 0.05; significant differences between pre- and postconditions or between postvalues and zero (for MG, mean EMG during downslope condition in which no consistent bursts could be identified). MG data were obtained from 5 cats; numbers of analyzed cycles for downslope, level and upslope conditions before denervation are 0, 30 and 47, and after denervation 71, 113 and 63. PL data were obtained from 2 cats; the corresponding numbers of analyzed cycles are 21, 29 and 20, and 33, 53 and 24.