Recent years have seen a rapid increase in research investigating the motor-related brain activity that supports joint action. This research has employed a variety of joint action tasks and an array of neuroimaging techniques, including fMRI, fNIRS, EEG, and TMS. In this review, we provide an overview of this research to delineate what is known about the motor-related brain activity that contributes to joint action and to highlight key questions for future research. Taken together, the surveyed research supports three major conclusions. First, the mere presence of a joint action context is sufficient to modulate motor activity elicited by observing others' actions. Second, joint action is supported by dissociable motor activity associated with a person's own actions, their partner's actions, and the joint action, and by between-brain coupling of motor-related oscillatory activity. Third, the structure of a joint action modulates the motor activity involved: Unique motor activity is associated with performing joint actions comprised of complementary actions and with holding the roles of leader and follower within a joint action. We conclude the review by highlighting overarching themes and key questions for future research.

近年来，研究支持关节动作的运动相关脑活动的研究迅速增加。这项研究采用了各种关节动作任务和一系列神经成像技术，包括fMRI，fNIRS，EEG和TMS。在这篇综述中，我们提供了本研究的概述，以描述关于与运动有关的大脑活动的知识，这些活动有助于关节动作，并突出了未来研究的关键问题。综上所述，所调查的研究支持三个主要结论。首先，仅仅存在一个联合行动环境就足以调节通过观察他人的行动而引起的运动活动。其次，联合行动由与一个人自己的行动，其伴侣的行动以及联合行动相关的可分解的运动活动支持，以及与大脑有关的运动相关振荡活动的耦合。第三，联合动作的结构调节所涉及的运动活动：独特的运动活动与执行由互补动作组成的联合动作以及在联合动作中保持领导者和跟随者的角色有关。我们通过突出总体主题和未来研究的关键问题来结束本综述。