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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Pain. 2013 Mar 15;154(7):1057–1064. doi: 10.1016/j.pain.2013.03.009

Figure 5.

Figure 5

Effect of E2 status and psychophysical stress on masseter muscle EMG activity evoked by intra-TMJ injections of ATP. A. TMJ-evoked masseter muscle EMG activity increased significantly in a dose-dependent manner after FS and sham conditioning and under HE and LE conditions. B. Response latency decreased significantly in all treatment groups. Sample sizes: HE-FS = 9, HE-sham = 8, LE-FS = 8, LE-sham = 8 rats. **P < 0.01 versus PBS; a = P < 0.05, b = P < 0.01 versus sham; + = P < 0.05, ++ = P < 0.01 HE- versus corresponding LE-treated group.