Is the whole the sum of its parts? Configural processing of headless bodies in the right fusiform gyrus
Is the whole the sum of its parts? Configural processing of headless bodies in the right fusiform gyrus
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DOI：
10.1016/j.bbr.2014.12.015
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发表时间：
2015-03-15
影响因子：
2.7
通讯作者：
Suchan, Boris
中科院分区：
文献类型：
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作者：
Bauser, Denise Soria;Suchan, Boris
本研究旨在通过呈现完整和杂乱的无头身体和面部来探讨功能磁共振（fMR）的适应效应。这种功能磁共振适应模式可以通过比较与相同或不同身体对呈现相关的血氧水平依赖（BOLD）信号，来研究不同脑区的加工特异性。有明确的证据表明，我们更喜欢整个身体，而不是身体各部分的总和。这种效应涉及到称为一阶关系信息的配置处理的一个子类型。对整个身体的偏好似乎与身体敏感大脑区域的激活模式有关。然而，到目前为止，还不清楚究竟是哪个皮质区域调节了这种偏好。在目前的研究中，我们调查了是否有神经元群体表现出对整个身体的选择性适应，而不是对其部分的总和。右侧梭状回身体区域（FBA）表现出对整个身体的偏好，而不是部分的总和，正如左右梭状回面部区域表现出对整个面部的偏好，而不是部分的总和。因此，目前的数据支持梭状回调节形体和面部加工的观点。目前的数据进一步支持这样一种观点，即身体是一种特殊的刺激类型，具有特定的特征，在身体敏感的大脑区域进行处理。(C) 2014 Elsevier B.V.版权所有
The current study aimed to explore the functional magnetic resonance (fMR)-adaption effect by presenting intact and scrambled headless bodies and faces. This fMR-adaption paradigm allows investigating processing specificity in distinct brain areas by comparing the blood-oxygen-level-dependent (BOLD) signal related to the presentation of same or different pairs of bodies. There is clear evidence that we prefer whole bodies compared to the sum of their parts. This effect refers to a subtype of configural processing termed first-order relational information. The preference for whole bodies seems to be associated with activation pattern in body-sensitive brain regions. However, it remains unclear until now, which cortical area exactly mediates this preference. In the present study, we investigated whether there are neuronal populations that show a selective adaption to whole bodies compared to the sum of their parts. The right fusiform body area (FBA) showed a preference for whole bodies compared to the sum of their parts as the right and left fusiform face area showed a preference for whole faces compared to the sum of their parts. Thus, the present data support the idea that configural body and face processing is mediated by the fusiform gyrus. The current data further support the view that bodies are a special stimulus class with specific characteristics which are processed in body-sensitive brain areas. (C) 2014 Elsevier B.V. All rights reserved.