An fNIRS-based hyperscanning study.

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Different strategies, distinguished cooperation efficiency, and brain synchronization for couples: An fNIRS-based hyperscanning study.

Abstract
INTRODUCTION: Individuals may employ different strategies when cooperating with others. For example, when two participants are asked to press buttons simultaneously, they may press the buttons as quickly as possible (immediate response strategy) or press them in a delayed pattern (delayed response strategy). Despite recognition of interpersonal brain synchronization (IBS) as a fundamental neural mechanism of cooperation, it remains unclear how various strategies influence cooperative behavior and its neural activities.
METHODS: To address this issue, 43 married couples were recruited to complete a button-press cooperative task, during which IBS was recorded by functional near-infrared spectroscopy hyperscanning.
RESULTS: Behavioral results showed that couples who adopted a delayed response strategy performed better than those who adopted an immediate response strategy and those without any obvious strategy, and a new measure (cooperation coefficient) was used to index the level of cooperation. In addition, stronger IBS in the right frontal cortex was observed in the delayed response condition. The greater couples’ perceived parenting stress, the more likely they were to perform well in tasks and the stronger their brain synchronization, since they tended to choose the delayed response strategy.
CONCLUSION: The delayed response strategy may better unify dyad partners’ response modes, trigger synchronized psychological processes, and enable their brains to become synchronized. The study extends understanding of cooperation by comparing the contributions of different strategies underlying cooperative behavior with corresponding neural evidence.

PMID: 32710600 [PubMed – as supplied by publisher]

Brain Behav. 2020 Jul 25;:e01768

Authors: Tang Y, Liu X, Wang C, Cao M, Deng S, Du X, Dai Y, Geng S, Fan Y, Cui L, Li F

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