同步性联合运动中对他人的运动预测:反馈线索的关键作用

Motor Prediction of Others in Synchronized Joint Action:The Critical Role of Feedback Cue

本研究旨在探讨任务线索和反馈线索在同步性联合运动中对他人运动预测的影响及亚稳态自我−他人整合模型中反馈线索在同步性联合运动中的关键作用,基于联合触点任务,采用3(线索:无线索、任务线索、反馈线索)×4(距离差:Δ0、Δ1、Δ2、Δ3)的被试内设计。结果发现:(1)任务线索下个体的反应时间受他人运动距离的调节,但不受其自身运动距离的物理影响。反馈线索与无线索下则表现出相反的趋势;(2)相比于无线索与任务线索,反馈线索下个体间的绝对异步性最小。表明反馈线索下通过感知预测他人动作的加工方式在同步性联合运动中起关键作用。

The purpose of this study was to investigate the influence of task cue and feedback cue on the motor prediction of others in synchronized joint action and the key role of feedback cue in the metastable model of self-other integration.By using a joint reaching task and a 3(cue:no cue,task cue,feedback cue)×4(distance differences:Δ0,Δ1,Δ2,Δ3)within-subjects design,the current study showed that:1)Under the task cue condition,the response time of individuals was regulated by the motor distance of others rather than the motor distance of themselves.Under the no cue condition and feedback cue condition,this pattern showed an opposite effect.2)Compared with the no cue and task cue condition,the mean absolute asynchrony was the lowest with feedback cue.This indicates that the feedback cue predicts the movement of others in a perceptual way,which plays a critical role in synchronized joint action.