Co-emergence processes in cooperation between humans

We analyzed the co-emergence process on the cooperative walk between two humans. As result, we found a cyclic process based on the following two control processes. One process is the realization of footsteps' coherence between the cooperative walkers. The other is the control of the footsteps' coherence by the mutual relations with the fluctuations of the arms' swing, connected with the attention. Additionally we found that the arms' fluctuations take flexible synchronizations between the cooperative walkers. These results suggest that the synchronization of the cyclic process realize the co-emergence of the cooperative walk flexibly.