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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Pain. 2013 Mar 19;154(7):1045–1056. doi: 10.1016/j.pain.2013.03.025

Figure 3.

Figure 3

Group differences in nociceptive flexion reflex (NFR) threshold. Filled circles depict raw data for each group, whereas unfilled boxes represent group means. NFR threshold was significantly higher in participants with fibromyalgia (FM) compared to pain-free healthy controls (HC) and participants with rheumatoid arthritis (RA) (ps < .05). If those participants with FM who reached the 50 mA max were removed (n=5), there were no group differences. Together, these data indicate that the FM group does not have tonic spinal sensitization.