Figure 3

A: MPI of spike-related effects in SpTAs compiled before and after conditioning (pre MPI and post MPI). Facilitation in a; Suppression in b. Data points are color coded for different spike-stimulus delays. Data points above the dashed line indicate SpREs that increased after conditioning. The red arrow identifies session in Fig. 2A. For sessions involving multiple days of conditioning, the post-conditioning values were obtained after the last conditioning period. B: Average MPI on pre-and post-conditioning day, and one and two days after the end of conditioning, for facilitation (a) and suppression (b). Error bars show standard deviation. Significance of comparisons is given above horizontal bars. C: Individual MPI values in successive days for cell-muscle pairs that were documented for two post-conditioning days. Open circles for subsequent days indicate significant changes (p<0.05) relative to Day 0. A & b: spike-related facilitation and suppression.