Abstract

People commonly use bluffing as a strategy to manipulate other people’s beliefs about them for gain. Although bluffing is an important part of successful strategic thinking, the inter-brain mechanisms underlying bluffing remain unclear. Here, we employed a functional near-infrared spectroscopy hyperscanning technique to simultaneously record the brain activity in the right temporal-parietal junction in 32 pairs of participants when they played a bluffing game against each other or with computer opponents separately. We also manipulated the penalty for bluffing (high vs low). Under the condition of high relative to low penalty, results showed a higher bluffing rate and a higher calling rate in human-to-human as compared to human-to-computer pairing. At the neural level, high relative to low penalty condition increased the interpersonal brain synchronization (IBS) in the right angular gyrus (rAG) during human-to-human as compared to human-to-computer interaction. Importantly, bluffing relative to non-bluffing, under the high penalty and human-to-human condition, resulted in an increase in response time and enhanced IBS in the rAG. Participants who bluffed more frequently also elicited stronger IBS. Our findings support the view that regions associated with mentalizing become synchronized during bluffing games, especially under the high penalty and human-to-human condition.

中文翻译：

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战略游戏虚张声势下的人际大脑同步

摘要

人们通常将虚张声势作为一种策略来操纵他人对自己的信念以获取收益。尽管虚张声势是成功的战略思维的重要组成部分，但虚张声势背后的大脑间机制仍然不清楚。在这里，我们采用了一种功能性近红外光谱超扫描技术，同时记录了32对参与者彼此之间或与计算机对手进行的诈游戏时，右颞顶交界处的大脑活动。我们还操纵了虚张声势的惩罚（高与低）。在高罚分相对低罚分的条件下，与人机配对相比，结果表明人与人之间的虚张声势和呼叫率更高。在神经层面 与人与计算机的交互相比，高与低惩罚条件相比，人与人之间在直角回（rAG）中的人际大脑同步（IBS）增强。重要的是，在高罚分和人与人之间的情况下，相对于非虚张声势，虚张声势导致响应时间增加，rAG中的IBS增强。经常虚张声势的参与者也引起了更强的IBS。我们的发现支持这样一种观点，即与诈欺相关的区域在虚张声势的比赛中变得同步，尤其是在高罚分和人与人之间的情况下。导致响应时间的增加和rAG中IBS的增强。经常虚张声势的参与者也引起了更强的IBS。我们的发现支持这样一种观点，即与诈欺相关的区域在虚张声势的比赛中变得同步，尤其是在高罚分和人与人之间的情况下。导致响应时间的增加和rAG中IBS的增强。经常虚张声势的参与者也引起了更强的IBS。我们的发现支持这样一种观点，即与诈欺相关的区域在虚张声势的比赛中变得同步，尤其是在高罚分和人与人之间的情况下。