Functional segregation within pars opercularis of the inferior frontal gyrus: Evidence from fMRI studies of imitation and action observation
Functional segregation within pars opercularis of the inferior frontal gyrus: Evidence from fMRI studies of imitation and action observation
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DOI：
10.1093/cercor/bhh199
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发表时间：
2005-07-01
期刊：
影响因子：
3.7
通讯作者：
Mazziotta, JC
中科院分区：
文献类型：
--
作者：
Molnar-Szakacs, I;Iacoboni, M;Mazziotta, JC
最近的神经影像研究表明，额下回(IFG)对于动作观察和模仿很重要。为了进一步探讨IFG在动作观察和模仿中的作用，我们汇集了我们实验室进行的七项功能磁共振成像研究的数据，这些研究涉及对简单手指动作的观察和模拟。对于模仿，我们发现在盖部有两个激活高峰，一个在它的背部，另一个在它的腹部。在动作观察过程中，盖部的背侧部也被激活，而腹侧部不被激活。此外，三角部在动作观察时被激活，但在模仿时不被激活。这个庞大的数据集表明了我们在人体镜像区域和内部模型的计算运动控制架构方面讨论的IFG的功能部分。
Recent neuroimaging studies have suggested that the inferior frontal gyrus (IFG) is important for action observation and imitation. In order to further explore the role of IFG in action observation and imitation, we pooled data from seven functional magnetic resonance imaging studies involving observation and imitation of simple finger movements performed in our laboratory. For imitation we found two peaks of activation in the pars opercularis, one in its dorsal sector and the other in its ventral sector. The dorsal sector of the pars opercularis was also activated during action observation, whereas the ventral sector was not. In addition, the pars triangularis was activated during action observation but not during imitation. This large dataset suggests a functional parcellation of the IFG that we discuss in terms of human mirror areas and the computational motor control architecture of internal models.