Fig. 5.

Correlation between amplitude envelope correlation (AEC) and pain visual analogue scale (VAS) score. In the alpha frequency band, neural connectivity expressed as AEC was seen between the right SII and right precuneus, and between the right SII and the right insula (q < 0.01). In the theta frequency band, the AEC values between the right SII and right PCC correlated with the pain VAS score (q < 0.01). Abbreviations: SII, secondary somatosensory cortex; PCC, posterior cingulate cortex; VAS, visual analogue scale. Solid lines regression curves.