A) Dark phase meal duration and B) dark phase meal frequency are shown for Sprague-Dawley rats after bilateral injection of 50 μl saline (SALINE) into the temporomandibular joint (TMJ) (SALINE/TMJ, n = 13) or 250 μg of complete Freund's adjuvant (CFA) into the TMJ (CFA/TMJ, n = 14) or knee (KNEE/CFA, n = 7). Data include pre-day (0) to TMJ injection through 42 days after injection. A 10 minute end-of-the-meal definition was used in the calculations for these graphs. Values are given as the means ± SEM. SALINE/TMJ group compared to the CFA/TMJ group, a = P<0.05 and CFA/TMJ group as compared to the CFA/KNEE group, b = P<0.05. SALINE/TMJ group compared to the CFA/KNEE group, *=<0.05.