The effects of capsaicin on operant behavior.

<p>A single, representative rat's response to capsaicin during a (A) temperature ramping protocol for (B) licking behavior, (C) contact behavior, and (D) reward intake. (E) Temperature still had a significant effect on behavior with capsaicin application. The Lick/Face ratio was still lower at 45°C and 21°C than at 33°C (post-hoc tests, p<0.001 and p<0.001). (F) The number of licks was altered by temperature differently than at baseline. Licks at 33°C were higher than the other two temperatures (both p<0.001). (G) Contact behavior was no longer dependent on temperature when capsaicin was applied. An *** represents a p-value less than 0.001 for a Bonferroni's post-hoc test when comparing behavior to 33°C after a One-Way ANOVA. N = 16 for graphs E–G.