Cortical mechanisms of human imitation
Cortical mechanisms of human imitation
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DOI：
10.1126/science.286.5449.2526
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发表时间：
1999-12-24
期刊：
影响因子：
56.9
通讯作者：
Rizzolatti, G
中科院分区：
文献类型：
--
作者：
Iacoboni, M;Woods, RP;Rizzolatti, G
模仿是如何发生的？模仿某个动作所需的运动计划如何从对动作的观察中得出？模仿可以基于将观察到的动作直接匹配到该动作的内部运动表征的机制（“直接匹配假设”）。为了检验这一假设，正常人类参与者被要求观察和模仿手指运动，并在空间或符号提示后执行相同的运动。通过功能性磁共振成像测量大脑活动。如果直接匹配假设是正确的，那么在手指移动过程中应该有一些区域变得活跃；无论它是如何被唤起的，当通过观察另一个人做出的相同动作而引发相同的动作时，它们的激活应该会增加。在左侧发现了两个具有这些属性的区域；下额皮质（岛盖区）和右顶上小叶的最前端区域。
How does imitation occur? How can the motor plans necessary for imitating an action derive from the observation of that: action? Imitation may be based on a mechanism directly matching the observed action onto an internal motor representation of that action ("direct matching hypothesis"). To test this hypothesis, normal human participants were asked to observe and imitate a finger movement and to perform the same movement after spatial or symbolic cues. Brain activity was measured with functional magnetic resonance imaging. If the direct matching hypothesis is correct, there should be areas that become active during finger movement; regardless of how it is evoked, and their activation should increase when the same movement is elicited by the observation of an identical movement made by another individual. Two areas with these properties were found in the left; inferior frontal cortex (opercular region) and the rostral-most region of the right superior parietal lobule.