Two is better than one: The effects of strategic cooperation on intra- and inter-brain connectivity by fNIRS

• DOI: 10.1371/journal.pone.0187652
• Publication Date: 2017-11-16T20:52:24Z
• Authors: Michela Balconi; Laurent Pezard; Jean-Louis Nandrino; Maria Elide Vanut...
• Keywords: Synchronicity; Dorsolateral prefrontal cortex

Inter-brain synchronization during joint actions is a core question in social neuroscience, and the differential contribution of intra- inter-brain functional connectivity has yet to be clarified along with role psychological variables such as perceived self-efficacy. The cognitive performance neural activation underlying execution were recorded by Near-Infrared imaging synchronicity game. An 8-channel array optodes was positioned over frontal prefrontal regions. During task, dyads received reinforcing feedback that experimentally manipulated induce adoption common strategies. Intra- indices computed an inter-brain/intra-brain index (ConIndex). Finally, correlation analyses run assess relationship between behavioral physiological levels. results showed external could modulate participant responses both components. After manipulation, there faster response times increased connectivity, ConIndex emerged primarily dorsolateral cortex. Additionally, presence significant correlations revealed only "two-players connection" may guarantee efficient performance. present study provides identification when reinforcement provided.