Figure 1.

Type of gait analyzed. A, Raw EMG waveforms from left (L) and right (R) limb muscles along with the stance phases (ST, thick black bars) of the four limbs during a 5 s period in 1 cat. In this episode, the left SP nerve was stimulated (STIM). B, Phase onsets and offsets were averaged from 16 separate locomotor trials, consisting of 10 SP nerve stimulations in 5 cats and six SR nerve stimulations in 4 cats. Error bars indicate mean ± SD of the 16 trials. C, The temporal phase relationships between the six pairs of limbs were measured from the 16 trials and averaged. Data points are the mean ± SD.