2021 Volume Annual59 Issue Proc Pages 653-654
We conducted a dual Magnetoencephalography (MEG) experiment to investigate the cortical signature in establishing non-verbal communication. Fourteen dyads who know each other silently watched either a live or a prerecorded video of the partner's face, under MEG recording. They were instructed to answer whether the face they watched was live or prerecorded at the end of each 20 s period. The alpha wave activities in the right caudal middle frontal gyrus (rMFG) were more correlated between two brains when they watched live relative to prerecorded video. Within the prerecorded video condition, the correlation between these regions less occurred when the dyad both correctly determined the video as prerecorded relative to other response conditions. These results suggest that the alpha band correlation in the rMFG of two brains may contribute to the establishment of live face-to-face communication.
