Abstract

Motor performances of the same action are affected by prior intentions to move unintentionally, cooperatively or competitively. Here, a back-and-forth movement task combined with a motion capture system and functional near-infrared spectroscopy (fNIRS)-based hyperscanning technology was utilized to record both the behavioral and neural data of 18 dyads of participants acting in pairs [joint conditions: no-intention, cooperative (Coop) and competitive (Comp)] or alone (single conditions: self-paced and fast-speed). The results revealed that Coop or Comp intentions in the joint conditions significantly sped up motor performance compared with similar single conditions, e.g. shorter movement times (MTs) in the Coop/Comp condition than the self-paced/fast-speed condition. Hemodynamic response analysis demonstrated that stronger activities for all joint conditions than the single conditions in the premotor and the supplementary motor cortex (Brodmann area 6) were independent of variations of MTs, indicating that they might reflect more complex aspects of action planning rather than simple execution-based processes. The comparisons of joint conditions across distinct prior intentions before acting yielded significant results for both behavioral and neural measures, with the highest activation of the temporo-parietal junction (TPJ) and the shortest MTs in the Comp condition considered to be implications for the top-down influence of prior intentions on joint performance.

中文翻译：

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先验意图对关节动作的影响：基于fNIRS的超扫描研究

摘要

同一动作的运动表现受先前意图无意，合作或竞争地移动的影响。在这里，来回运动任务与运动捕获系统和基于功能近红外光谱（fNIRS）的超扫描技术相结合，用于记录成对行动的18对二联参与者的行为和神经数据[联合条件：无意图，合作（Coop）和竞争（Comp）]或单独使用（单个条件：自定进度和快速）。结果表明，与类似的单个条件相比，在联合条件下的Coop或Comp意图显着加快了运动性能，例如，在Coop / Comp条件下的运动时间（MTs）比自定速度/快速速度条件短。血流动力学响应分析表明，在运动前和辅助运动皮层（Brodmann区域6）中，所有关节条件下的活动均比单个条件下的活动强，这与MT的变化无关，表明它们可能反映了行动计划的更复杂方面，而不是简单的执行基于过程。在行动前，对不同先验意图进行的关节状况比较在行为和神经测量方面均产生了显着结果，颞顶顶接合部（TPJ）的激活最高，而在Comp状况下最短的MT则被认为是对最高水平的暗示。降低先发意图对联合绩效的影响。表明它们可能反映了行动计划的更复杂方面，而不是简单的基于执行的过程。在行动前，对不同先验意图进行的关节状况比较在行为和神经测量方面均产生了显着结果，颞顶顶接合部（TPJ）的激活最高，而在Comp状况下最短的MT则被认为是对最高水平的暗示。降低先发意图对联合绩效的影响。表明它们可能反映了行动计划的更复杂方面，而不是简单的基于执行的过程。在行动前，对不同先验意图进行的关节状况比较在行为和神经测量方面均产生了显着结果，颞顶顶接合部（TPJ）的激活最高，而在Comp状况下最短的MT则被认为是对最高水平的暗示。降低先发意图对联合绩效的影响。