Fig. 10.

Effect of treadmill speed on the mean phase interval of the 4 different limb pairs across sessions/animals. The mean phase interval between limb contacts is shown for 4 different limb pairs: the left and right forelimbs (A), the left and right hindlimbs (B), the right forelimb and right hindlimb (C), and the left forelimb and right hindlimb (D). The limb pairs shown in each panel are shown in black in the cat diagram at top right. For each cycle, the phase interval was measured between limb contacts and then normalized to the cycle duration of the right hindlimb. It was then multiplied by 360 and expressed in degrees. Each bar is the mean ± SD phase interval of 10 sessions (5 cats × 2 sessions). Asterisks indicate significant differences (pairwise comparisons with Bonferroni correction) between speeds, with the long horizontal line indicating the start of the comparisons (i.e., from 0.3 m/s to other speeds). *P < 0.05.