Automatic imitation of biomechanically possible and impossible actions: Effects of priming movements versus goals
Automatic imitation of biomechanically possible and impossible actions: Effects of priming movements versus goals
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DOI：
10.1037/0096-1523.34.2.489
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发表时间：
2008-04-01
影响因子：
2.1
通讯作者：
Bertenthal, Bennett I.
中科院分区：
文献类型：
--
作者：
Longo, Matthew R.;Kosobud, Adam;Bertenthal, Bennett I.
最近的行为，神经影像学和神经生理学的研究表明，一个共同的代表性代码介导的观察和执行的行动，然而，这种代表性代码的性质还没有得到很好的理解。作者解决这个问题的调查（a）是否观察执行匹配系统（或镜像系统）编码的组成动作以及其目标和（B）如何影响这种敏感性的自上而下的指令效果。作者测试了观察到的手指动作的自动模仿，同时操纵这些动作是否在生物力学上是可能的或不可能的，但保持目标不变。当没有提及这种差异时（实验1），从可能和不可能的动作中会引发类似的自动模仿，这表明这些动作已经在目标水平上编码。然而，当注意力被吸引到这种差异时（实验2），只有可能的动作才会引起自动模仿。这种敏感性是特定的模仿，不影响空间刺激反应的兼容性（实验3）。这些结果表明，自动模仿是由自上而下的影响，编码动作的运动和目标取决于注意力的焦点。
Recent behavioral, neuroimaging, and neurophysiological research suggests a common representational code mediating the observation and execution of actions; yet, the nature of this representational code is not well understood. The authors address this question by investigating (a) whether this observation-execution matching system (or mirror system) codes both the constituent movements of an action as well as its goal and (b) how such sensitivity is influenced by top-down effects of instructions. The authors tested the automatic imitation of observed finger actions while manipulating whether the movements were biomechanically possible or impossible, but holding the goal constant. When no mention was made of this difference (Experiment 1), comparable automatic imitation was elicited from possible and impossible actions, suggesting that the actions had been coded at the level of the goal. When attention was drawn to this difference (Experiment 2), however, only possible movements elicited automatic imitation. This sensitivity was specific to imitation, not affecting spatial stimulus-response compatibility (Experiment 3). These results suggest that automatic imitation is modulated by top-down influences, coding actions in terms of both movements and goals depending on the focus of attention.