Fig. 7From: Effects of chiropractic spinal manipulation on laser-evoked pain and brain activityC-fiber-evoked potentials. a Average waveforms time-locked to the onset of laser stimulation for the N2 and P2 at Cz with a nose reference, for the 31 participants included in the analysis. b Average topographic maps for the C-N2 (500 ms) and C-P2 (650 ms). No significant effect was observed between groupsBack to article page