The human action recognition system and its relationship to Broca's area:: an fMRI study
The human action recognition system and its relationship to Broca's area:: an fMRI study
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DOI：
10.1016/s1053-8119(03)00087-9
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发表时间：
2003-07-01
期刊：
影响因子：
5.7
通讯作者：
Büchel, C
中科院分区：
文献类型：
--
作者：
Hamzei, F;Rijntjes, M;Büchel, C
灵长类动物的研究已经确定了能够识别动作的神经元群体。当猴子执行或观察抓握动作时，这些“镜像神经元”都表现出尖峰活动。这些神经元位于腹侧运动前皮质，可能与人类的“布罗卡区”同源。这导致了这样的猜测，即动作识别和语言产生共享一个共同的系统[趋势神经科学。21（1998），188]。为了验证这一假设，我们结合了动作识别与语言生产（VERB）和抓取运动任务（MOVE），通过使用功能磁共振成像。在左侧额下回和额下回与中央前回之间的边界（定义为IFG/PG）、腹侧枕颞交界处、上级和下顶叶皮质以及左半球的顶内沟中观察到动作联想相关激活。在顶叶皮层、左额下回发现了语言产生、动作执行和动作识别的激活重叠。IFG-PG边界（IFG/PG）。动作再认和动词生成的激活峰在单个被试中总是不同的。但是没有发现一致的空间关系，这与动作识别和语言产生共享共同的功能结构的假设雅阁。(C)2003 Elsevier Science（美国）。All rights reserved.
Primate studies have identified populations of neurons that are capable of action recognition. These "mirror neurons" show spiking activity both when the monkey executes or observes a grasping movement. These neurons are located in the ventral premotor cortex, possibly the homologue of "Broca's area" in human. This led to the speculation that action recognition and language production share a common system [Trends Neurosci. 21 (1998), 188]. To test this hypothesis, we combined an action recognition with a language production (VERB) and a grasping movement task (MOVE) by using functional magnetic resonance imaging. Action recognition-related activation was observed in the left inferior frontal gyrus and on the border between the inferior frontal gyrus and precentral gyrus (defined as IFG/PG), the ventral occipitotemporal junction, the superior and inferior parietal cortex, and in the intraparietal sulcus in the left hemisphere. An overlap of activations due to the language production, movement execution, and action recognition was found in the parietal cortex, the left inferior frontal gyrus. and the IFG-PG border (IFG/PG). The activation peaks of action recognition and verb generation were always different in single subjects. but no consistent spatial relationship was detected, in accord with the hypothesis that action recognition and language production share a common functional architecture. (C) 2003 Elsevier Science (USA). All rights reserved.