Dötsch Dominik, Vesper Cordula, Schubö Anna
Cognitive Neuroscience of Perception and Action, Faculty of Psychology, Philipp University of Marburg Marburg, Germany.
Department of Cognitive Science, Central European University Budapest, Hungary.
Front Psychol. 2017 Feb 7;8:77. doi: 10.3389/fpsyg.2017.00077. eCollection 2017.
Activating action representations can modulate perceptual processing of action-relevant dimensions, indicative of a common-coding of perception and action. When two or more agents work together in joint action, individual agents often need to consider not only their own actions and their effects on the world, but also predict the actions of a co-acting partner. If in these situations the action of a partner is represented in a functionally equivalent way to the agent's own actions, one may also expect interaction effects between action and perception across jointly acting individuals. The present study investigated whether the action of a co-acting partner may modulate an agent's perception. The "performer" prepared a grasping or pointing movement toward a physical target while the "searcher" performed a visual search task. The performer's planned action impaired the searcher's perceptual performance when the search target dimension was relevant to the performer's movement execution. These results demonstrate an action-induced modulation of perceptual processes across participants and indicate that agents represent their partner's action by employing the same perceptual system they use to represent an own action. We suggest that task representations in joint action operate along multiple levels of a cross-brain predictive coding system, which provides agents with information about a partner's actions when they coordinate to reach a common goal.
激活动作表征可以调节与动作相关维度的知觉加工，这表明知觉和动作存在共同编码。当两个或更多个体共同执行联合动作时，个体不仅需要考虑自身的动作及其对世界的影响，还需要预测合作伙伴的动作。如果在这些情况下，伙伴的动作与个体自身的动作以功能等效的方式被表征，那么人们可能也会预期在共同行动的个体之间，动作与知觉会产生交互作用。本研究调查了合作伙伴的动作是否会调节个体的知觉。“执行者”准备向一个物理目标进行抓握或指向动作，而“搜索者”执行视觉搜索任务。当搜索目标维度与执行者的动作执行相关时，执行者的计划动作会损害搜索者的知觉表现。这些结果证明了跨参与者的动作诱导的知觉过程调节，并表明个体通过使用与表征自身动作相同的知觉系统来表征其伙伴的动作。我们认为，联合动作中的任务表征在跨脑预测编码系统的多个层面上运作，该系统在个体协调以达成共同目标时，为他们提供有关伙伴动作的信息。
