Fig. 4.

Interpartner EEG coupling between the leader (LE) and the follower (FE) in the experimental group. Theta band: (A) no-contact vs. eye contact conditions (9 links); (B) no-contact vs. hand contact conditions (2 links); (C) all other conditions vs. eye and hand contact condition (9 links); Alpha band: (D) no-contact vs. eye contact conditions (0 links); (E) no-contact vs. hand contact conditions (7 links); (F) all other conditions vs. eye and hand contact condition (9 links). The orange lines represent statistically significant coupling links between corresponding areas in the leaders’ and the followers’ brains. The head color reflects the number of links.