Fig. 6.

Effect of treadmill speed on the patterns of phase dominance for all episodes. The pattern of phase dominance was established by 3 criteria (see materials and methods). A and B: 160 episodes were analyzed based on kinematic events (5 cats × 2 sessions × 2 sides × 8 speeds) for the forelimbs (A) and the hindlimbs (B) and were classified as stance dominated, swing dominated, or covarying. C: 64 episodes were also analyzed based on EMG burst durations (4 cats × 2 sessions × 1 side × 8 speeds) and were classified as extensor dominated, flexor dominated, or covarying. Note that in C 2 episodes were classified as invariant (1 episode at 0.7 m/s and 1 at 0.8 m/s).