Figure 10.

(A) Air-puff stimulation-induced the DIP period (n = 46), the tail flick latency (n = 26) and the bite latency (n = 40). ^**P < 0.01, significantly different from DIP periods and tail flick latencies. Note that there was no significant difference between the DIP period and the tail flick latency, suggesting that the descending and ascending LC/SC systems simultaneously cease activity. (B) Regression analysis of the DIP period and the bite latency. Nine points were obtained from nine untreated rats. The regression line corresponds to y = 4.24 + 0.26x. Note that the bite latency were nearly constant regardless of the change in the DIP period, suggesting that the bite latency are not influenced by the DIP period (Tsuruoka et al., 2011).