Figure 2

Modification of orofacial operant behaviors by menthol at cooling temperatures. A) Total contact time in ION-CCI rats following the administration of vehicle (open bar, n=7) and menthol (solid bar, n=7). B) Total contact number in ION-CCI rats following the administration of vehicle (open bar, n=7) and menthol (solid bar, n=7). C) Total contact time in sham rats following the administration of vehicle (open bar, n=7) and menthol (solid bar, n=7). D) Total contact time in sham rats following the administration of vehicle (open bar, n=7) and menthol (solid bar, n=7). Thermal module was set at 17 °C in A to D. E&F) Same as C&D respectively except thermal module was set at 24 °C. Data represent Mean ± SEM; * p<0.05.