Coordinated social interactions are supported by integrated neural representations.

Silvia Formica, Marcel Brass
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引用次数: 0

Abstract

Joint actions are defined as coordinated interactions of two or more agents towards a shared goal, often requiring different and complementary individual contributions. However, how humans can successfully act together without the interfering effects of observing incongruent movements is still largely unknown. It has been proposed that interpersonal predictive processes are at play to allow the formation of a Dyadic Motor Plan, encompassing both agents' shares. Yet, direct empirical support for such an integrated motor plan is still limited. In this study, we aimed at testing the properties of these anticipated representations. We collected EEG data while human participants (N = 36; 27 females) drew shapes simultaneously to a virtual partner, in two social contexts: either they had to synchronize and act jointly, or they performed the movements alongside, but independently. We adopted a multivariate approach to show that the social context influenced how the upcoming action of the partner is anticipated during the interval preceding the movement. We found evidence that acting jointly induces an encoding of the partner's action that is strongly intertwined with the participant's action, supporting the hypothesis of an integrative motor plan in joint but not in parallel actions.

综合神经表征支持协调的社会互动。
联合行动被定义为两个或更多行为体为实现共同目标而进行的协调互动,通常需要个体做出不同的互补贡献。然而,人类如何才能成功地共同行动而不受观察到的不协调动作的干扰,这在很大程度上仍是一个未知数。有人提出,人际间的预测过程在发挥作用,以形成一个包含两个人的份额的 "双人运动计划"(Dyadic Motor Plan)。然而,对这种综合运动计划的直接经验支持仍然有限。在本研究中,我们旨在测试这些预期表征的特性。我们收集了人类参与者(36 人,27 名女性)在两种社交环境下同时向虚拟伙伴绘制图形时的脑电图数据:要么他们必须同步并共同行动,要么他们一起但独立地完成动作。我们采用了一种多变量方法来说明,在动作之前的时间间隔内,社交情境会影响人们对同伴即将采取的动作的预期。我们发现有证据表明,联合行动会诱发对同伴行动的编码,而这种编码与参与者的行动紧密相连,这支持了联合行动而非平行行动中综合运动计划的假设。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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