“…However, most of them have mainly focused on body-movement synchronization involved in concurrent interactions using various tasks such as key-press task (Cui, Bryant, & Reiss, 2012;Funane et al, 2011), finger-movement task (Holper, Scholkmann, & Wolf, 2012;Naeem, Prasad, Watson, & Kelso, 2012;Yun, Watanabe, & Shimojo, 2012), and music-playing task (Babiloni et al, 2012). Little is known about the neural mechanism of turn-based interaction due to the complex dynamics of interactive situations (Ménoret et al, 2014).…”