Figure 6. Effect of cooling of the CPN on the early and the late peaks induced in Q EMG activity during walking.

A, conditioned Q (VL) EMG by the CPN stimulation (2.5 × MT), plotted against the latency after the stimulation, was recorded during walking (40 ms after heel strike) in one subject before (control, thin line) and during (thick line, 50 trials of each) cooling. B and C, results obtained in all the subjects investigated this way (5, same legend as for Fig. 3I–J), the ordinate is the latency of the early peak (B) and of the late peak (C) observed before (control, on the left) and during (on the right) cooling. The mean latency (±s.e.m.) is written below each corresponding situation.