DISCUSSION
INS
This was the first fNIRS‐based hypersanning study to investigate the neurobiological mechanism of “patient”–acupuncturist interaction during acupuncture stimuli in a naturalistic clinical setting. The results demonstrated that INS within PFC (i.e., IFC, MFC, and SFC) of “patient”–acupuncturist dyad was significantly increased during verum but not sham acupuncture stimuli, and positively correlated with the needling sensations of “patients.”