Imitation of hand and tool actions is effector-independent.
Imitation of hand and tool actions is effector-independent.
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手和工具动作的模仿与效应器无关。
DOI：
10.1007/s00221-011-2852-3
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发表时间：
2011-10
影响因子：
2
通讯作者：
Bekkering, H.
中科院分区：
文献类型：
--
作者：
van Elk, M.;van Schie, H. T.;Bekkering, H.
在本研究中，我们根据工具经常延伸人的身体这一理论概念，研究了对手或工具动作的模仿是否受到效应器特定信息的调制。受试者用手持工具或右手对物体进行抓握动作。行动发起响应图片表示在一个对象，可以是一致或不一致的所需的行动（抓地力型一致性）的抓地力。重要的是，动作可以通过工具线索、手线索和符号线索（效应器类型一致性）来提示。对于手和工具的行动，行动一致性的影响，观察到，反映在更快的反应时间，如果观察到的抓地力类型是一致的所需的运动。然而，手的动作和工具的动作都没有受到图片中表示的效应器的不同影响（即，当执行工具动作时，工具线索和手线索的动作一致性效应相似）。这一发现表明，模仿的手和工具的行动是独立的效应，从而支持通才，而不是专业理论的模仿。
Following the theoretical notion that tools often extend one’s body, in the present study, we investigated whether imitation of hand or tool actions is modulated by effector-specific information. Subjects performed grasping actions toward an object with either a handheld tool or their right hand. Actions were initiated in response to pictures representing a grip at an object that could be congruent or incongruent with the required action (grip-type congruency). Importantly, actions could be cued by means of a tool cue, a hand cue, and a symbolic cue (effector-type congruency). For both hand and tool actions, an action congruency effect was observed, reflected in faster reaction times if the observed grip type was congruent with the required movement. However, neither hand actions nor tool actions were differentially affected by the effector represented in the picture (i.e., when performing a tool action, the action congruency effect was similar for tool cues and hand cues). This finding suggests that imitation of hand and tool actions is effector-independent and thereby supports generalist rather than specialist theories of imitation.
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