Experience modulates automatic imitation
Experience modulates automatic imitation
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DOI：
10.1016/j.cogbrainres.2004.09.009
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发表时间：
2005-02-01
期刊：
影响因子：
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通讯作者：
Haggard, P
中科院分区：
文献类型：
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作者：
Heyes, C;Bird, G;Haggard, P
动作观察引起运动前皮层和初级运动皮层相应区域的激活。我们测试了这样一个假设，即这种激活依赖于通过观察和执行相同动作的相关经验建立的视觉-运动连接。先前的研究表明，当受试者观察到他们正在做的动作时，相对于他们观察到的动作与他们正在做的动作不同的情况，他们的手张开和闭上的手势会更容易。实验1在一个简单的反应时间（RT）程序中使用正交平面上的刺激-反应（SR）运动重复了这一发现。这意味着，这种效应是自动模仿的一个例子，是一种独立于指令的倾向，执行与所观察到的运动在拓扑结构上相似，而不仅仅是空间相容反应的一个例子。在实验2中，实验1中发现的自动模仿效应通过一段短时间的训练消除了，在实验2中，受试者对张开手的反应是闭合手，对张开手的反应是张开手。这一结果与一种假设是一致的，即通过动作观察介导运动激活的皮层连接不是先天的，而是通过经验形成的。(C) 2004 Elsevier b.v.版权所有
Action observation gives rise to activation in corresponding areas of the premotor and primary motor cortices. We tested the hypothesis that this activation depends on visual-motor connections established through correlated experience of observing and executing the same action. Previous work has shown that hand opening and hand closing gestures are facilitated when subjects observe the movement they are performing, relative to a condition in which they observe a different movement from the one they are performing. Experiment 1 replicated this finding in a simple reaction time (RT) procedure using stimulus-response (SR) movements in orthogonal planes. This implies that the effect is at, example of automatic imitation, an instruction -independent tendency to execute movements that are topologically similar to those observed, and not merely an example of spatially compatible responding.In Experiment 2, the automatic imitation effect found in Experiment 1 was abolished by a brief period of training in which subjects responded to hand opening by closing their hands, and to hand closing by opening their hands.This outcome is consistent with the hypothesis that, rather than being innate, the cortical connections mediating motor activation by action observation are formed through experience. (C) 2004 Elsevier B. V. All rights reserved.