Figure 3.

Effects of funicular lesions on the frequency and power of the lumbar rhythm produced by SCA stimulation. The means ± SDs of the normalized frequency and power (norm. freq., norm. power) of the rhythm produced by SCA stimulation and recorded from the left and right ventral roots of L2 before (Control, black histograms) and after surgical manipulations of the white matter funiculi (Cut, white histograms) are shown for the three epochs sampled during the stimulus trains (epochs I, II, and III are numbered 1, 2, 3 for the Control and a–c for the postlesion period, respectively). The matrices below each set of histograms show the results of the multiple-comparison tests performed using the modified Tukey's method. Significant differences (starting from p < 0.05) are denoted by X. The number of experiments was as follows: VF lesion = 9, VLF/LF lesion = 4, DLF lesion = 4, DF lesion = 4, Only VF intact = 3, Only VLF/LF intact = 6, only DLF intact = 4, only DF intact (data not shown) = 5. The number of trains in each experiment was 8 (4 control, and 4 postlesion trains).