Fig. 5. (A ) Summary of the peak increase in action potential rate produced by application of von Frey filaments to 10 wide-dynamic-range neurons with enhanced responses after incision. (B ) Summary of the average peak increase in action potential rate produced by application of von Frey filaments to two high-threshold neurons with enhanced responses after incision. Each bar and bracket represent the mean and SD, respectively, preincision (dark bars) and postincision (hatched bars). *P < 0.05 versus  postincision. Rate = rate of action potentials in impulses per second; bin width = 2 s.