The inter‐brain neural synchronization change of channels at prefrontal cortex in both groups
INS, GCA, CORTEX
Compared with the baseline, the dyads in VAG demonstrated significant INS increment in 11 channels at PFC including the bilateral superior frontal cortex (SFC), middle frontal cortex (MFC) and left inferior frontal cortex (IFC) (Table Acupuncture‐evoked INS in VAGAbbreviations: CH, channel; INS, inter‐brain neural synchronization; VAG, verum acupuncture group.
Furthermore, GCA was applied to explore the directionality of INS in 11 significant channels, finding that the mean G‐causalities of both directions were significantly higher than zero: from the subject to the acupuncturist (all The dyads in SAG did not show significant changes of INS in all these channels (all 