Contorted and ordinary body postures in the human brain.
Contorted and ordinary body postures in the human brain.
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DOI：
10.1007/s00221-009-2093-x
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发表时间：
2010-07
影响因子：
2
通讯作者：
Hamilton, Antonia F. de C.
中科院分区：
文献类型：
--
作者：
Cross, Emily S.;Mackie, Emilie C.;Wolford, George;Hamilton, Antonia F. de C.
社会互动和对非语言行为的理解需要人们身体的表现。对身体表征的神经基础的研究涉及几个脑区，包括纹外体区和梭状体区（EBA和FBA）、上级颞沟（STS）、额下回（IFG）和顶下小叶（IPL）。这些区域在解析熟悉和不熟悉的身体姿势时所扮演的不同角色仍然不清楚。我们通过功能神经影像学中的重复抑制设计，研究了这个身体观察网络对普通和扭曲姿势的静态图像的反应。参与者在观察柔术演员或一组普通或不寻常配置的物体的静态图像时接受扫描，这些物体从不同的角度呈现。与普通的身体姿势相比，当参与者观看扭曲时，EBA和FBA中出现了更大的活动。从不同的角度重复呈现相同的姿势会导致梭状回以及三个区域的反应受到抑制，这三个区域是通过观察移动的身体而激活的，即STS、IFG和IPL。这四个区域没有区分图像视点或姿势的可接受性。总之，这些数据定义了一个广泛的皮质网络，用于处理静态身体姿势，包括与动作观察相关的经典区域。
Social interaction and comprehension of non-verbal behaviour requires a representation of people’s bodies. Research into the neural underpinnings of body representation implicates several brain regions including extrastriate and fusiform body areas (EBA and FBA), superior temporal sulcus (STS), inferior frontal gyrus (IFG) and inferior parietal lobule (IPL). The different roles played by these regions in parsing familiar and unfamiliar body postures remain unclear. We examined the responses of this body observation network to static images of ordinary and contorted postures by using a repetition suppression design in functional neuroimaging. Participants were scanned whilst observing static images of a contortionist or a group of objects in either ordinary or unusual configurations, presented from different viewpoints. Greater activity emerged in EBA and FBA when participants viewed contorted compared to ordinary body postures. Repeated presentation of the same posture from different viewpoints lead to suppressed responses in the fusiform gyrus as well as three regions that are characteristically activated by observing moving bodies, namely STS, IFG and IPL. These four regions did not distinguish the image viewpoint or the plausibility of the posture. Together, these data define a broad cortical network for processing static body postures, including regions classically associated with action observation.
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影响因子：
2
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通讯作者：
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