Somatotopic representation of action words in human motor and premotor cortex
Somatotopic representation of action words in human motor and premotor cortex
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DOI：
10.1016/s0896-6273(03)00838-9
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发表时间：
2004-01-22
期刊：
影响因子：
16.2
通讯作者：
Pulvermüller, F
中科院分区：
文献类型：
--
作者：
Hauk, O;Johnsrude, I;Pulvermüller, F
自从早期对语言和大脑的研究以来，词义被认为是在特定的大脑区域进行处理的，而大多数现代神经科学家将其定位于左侧颞叶。在这里，我们使用事件相关功能磁共振成像来显示，在被动阅读任务中，涉及面部、手臂或腿部动作(例如，舔、挑或踢)的动作词，沿着运动条的不同激活区域，这些区域要么直接毗邻，要么与舌头、手指或脚的实际运动激活的区域重叠。这些结果表明，动作词的指称意义与运动前皮质和运动前皮质的躯体视觉激活存在相关性。这排除了人脑中统一的“意义中心”，并支持一种动态的观点，根据这种观点，单词是由具有反映单词语义的皮质地形图的分布式神经元组件处理的。
Since the early days of research into language and the brain, word meaning was assumed to be processed in specific brain regions, which most modern neuroscientists localize to the left temporal lobe. Here we use event-related fMRI to show that action words referring to face, arm, or leg actions (e.g., to lick, pick, or kick), when presented in a passive reading task, differentially activated areas along the motor strip that either were directly adjacent to or overlapped with areas activated by actual movement of the tongue, fingers, or feet. These results demonstrate that the referential meaning of action words has a correlate in the somatotopic activation of motor and premotor cortex. This rules out a unified "meaning center" in the human brain and supports a dynamic view according to which words are processed by distributed neuronal assemblies with cortical topographies that reflect word semantics.