Psychology, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, UK; Department of Cognitive Science, Central European University, Budapest, Hungary.
Cognition and Philosophy Lab, Department of Philosophy, Monash University, Melbourne, Australia; Department of Cognitive Science, Central European University, Budapest, Hungary; Institute of Psychology, Jagiellonian University, Cracow, Poland.
Neuropsychologia. 2019 Aug;131:73-83. doi: 10.1016/j.neuropsychologia.2019.05.029. Epub 2019 May 31.
Do people engaged in joint action form action plans that specify joint outcomes at the group level? EEG was recorded from pairs of participants who performed coordinated actions that could result in different postural configurations. To isolate individual and joint action planning processes, a pre-cue specified in advance the individual actions and/or the joint configuration. Participants had 1200 ms to prepare their actions. Then a Go cue specified all action parameters and participants performed a synchronized action as quickly as possible. Action onsets were shorter when the pre-cue specified the joint configuration, regardless of whether individual action was also specified. EEG analyses showed that specifying joint action parameters in advance reduced ambiguity in a structured joint action plan (reflected in the decrease of the amplitude of the P600) and helped with representing action goals and interpersonal coordination patterns in sensorimotor brain areas (reflected in increased alpha/mu suppression and CNV amplitudes). These results provide clear evidence that joint action is driven not only by action plans that specify individual contributions, but also by action plans that specify joint action outcomes at the group level.
人们是否会制定行动计划，指定群体层面的联合结果？研究记录了参与者执行协调动作的脑电活动，这些动作可能导致不同的姿势配置。为了分离个体和联合行动计划过程，预提示预先指定了个体动作和/或联合配置。参与者有 1200 毫秒的时间来准备他们的动作。然后，一个 Go 提示指定了所有的动作参数，参与者尽可能快地执行同步动作。当预提示指定联合配置时，动作起始时间更短，无论是否同时指定了个体动作。脑电图分析表明，提前指定联合动作参数减少了结构化联合行动计划中的歧义（反映在 P600 幅度的降低），并有助于在感觉运动大脑区域中表示动作目标和人际协调模式（反映在增加的 alpha/mu 抑制和 CNV 幅度）。这些结果提供了明确的证据，表明联合行动不仅由指定个体贡献的行动计划驱动，还由指定群体层面联合行动结果的行动计划驱动。
