Reproducible readings indicate chronic subluxation. This is NOT a normal or desirable state of affairs. In acute and subacute subluxations, there will be levels out of range, but the pattern will vary. In chronic subluxations, the pattern will be fixed, and there will be levels out of range. Levels of asymmetry often do not relate to the level of primary subluxation.
Thermal patterns measure autonomic activity.
Levels of thermal asymmetry may not correlate with levels of EMG asymmetry, since EMG is measuring muscle activity, not autonomic function. These observations should be tested through formalized research. The chiropractic profession pioneered skin temperature differential analysis with the introduction of the neurocalometer over 70 years ago. Strengthened by extensive clinical experience and ongoing research, paraspinal skin temperature differential analysis is strongly established in the practice of subluxation based chiropractic. Canadian Memorial Chiropractic College.