Fig. 3.

Weak phasic modulation of input resistance during fictive scratching. A, Average changes in input resistance for each of the 11 extensor motoneurons recorded during fictive scratching. As in Figure 2C, the average resistance during the RD phase of scratching (solid bar) is flanked on the left by the average during the TH phase and, on the right, by the average during the RH phase. The integral method was used, and the measurements with negative and positive current pulses were pooled together. B, Mean decrease in input resistance during the different phases of scratching. The means are displayed with the SEs.