Kirsch Wladimir
Department of Psychology, University of Würzburg, Germany.
Acta Psychol (Amst). 2015 Mar;156:22-31. doi: 10.1016/j.actpsy.2015.01.002. Epub 2015 Jan 21.
Previous research suggested that perception of spatial location is biased towards spatial goals of planned hand movements. In the present study I show that an analogous perceptual distortion can be observed if attention is paid to a spatial location in the absence of planning a hand movement. Participants judged the position of a target during preparation of a mouse movement, the end point of which could deviate from the target by a varying degree in Exp. 1. Judgments of target position were systematically affected by movement characteristics consistent with perceptual assimilation between the target and the planned movement goal. This effect was neither due to an impact of motor execution on judgments (Exp. 2) nor due to characteristics of the movement cues or of certain target positions (Exp. 3, Exp. 5A). When the task included deployment of attention to spatial positions (former movement goals) in preparation for a secondary perceptual task, an effect emerged that was comparable with the bias associated with movement planning (Exp. 4, Exp. 5B). These results indicate that visual distortions accompanying manipulations of variables related to action could be mediated by attentional mechanisms.
先前的研究表明，空间位置感知偏向于计划中的手部动作的空间目标。在本研究中，我发现，如果在没有计划手部动作的情况下关注一个空间位置，也能观察到类似的感知扭曲。在实验1中，参与者在准备鼠标移动时判断目标的位置，该移动的终点可能会在不同程度上偏离目标。目标位置的判断受到与目标和计划运动目标之间的感知同化一致的运动特征的系统影响。这种效应既不是由于运动执行对判断的影响（实验2），也不是由于运动线索或某些目标位置的特征（实验3、实验5A）。当任务包括在准备二次感知任务时将注意力部署到空间位置（先前的运动目标）时，出现了一种与运动计划相关的偏差相当的效应（实验4、实验5B）。这些结果表明，与动作相关变量操作伴随的视觉扭曲可能由注意机制介导。
