Neural responses to Mooney images reveal a modular representation of faces in human visual cortex
Neural responses to Mooney images reveal a modular representation of faces in human visual cortex
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DOI：
10.1016/j.neuroimage.2003.08.023
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发表时间：
2004-01-01
期刊：
影响因子：
5.7
通讯作者：
Schluppeck, D
中科院分区：
文献类型：
--
作者：
Andrews, TJ;Schluppeck, D
关于物体的信息在视觉皮层中的表现方式仍然存在争议。人类物体识别的一个模型提出，信息是在模块中处理的，高度专业化的不同类别的对象;一个相反的模型呼吁在一个大型的视觉区域网络的分布式表示。我们解决了这一问题的辩论，通过监测活动的脸和对象的选择领域，而人类受试者看到模糊的脸刺激（穆尼脸）。当受试者报告看到一张脸时，梭状回面部选择区域的神经反应比他们将图像视为一组斑点时更大。与此相反，无论是面对选择性体素的上级颞沟或对象选择性体素的海马旁回和枕外侧复合体的脸和无脸感知事件之间的磁共振反应没有差异。这些结果挑战了面孔的神经表征是分布和重叠的概念，并表明梭状回与面孔的意识密切相关。(C)2003年爱思唯尔公司All rights reserved.
The way in which information about objects is represented in visual cortex remains controversial. One model of human object recognition poses that information is processed in modules, highly specialised for different categories of objects; an opposing model appeals to a distributed representation across a large network of visual areas. We addressed this debate by monitoring activity in face- and object-selective areas while human subjects viewed ambiguous face stimuli (Mooney faces). The measured neural response in the face-selective region of the fusiform gyrus was greater when subjects reported seeing a face than when they perceived the image as a collection of blobs. In contrast, there was no difference in magnetic resonance response between face and no-face perceived events in either the face-selective voxels of the superior temporal sulcus or the object-selective voxels of the parahippocampal gyrus and lateral occipital complex. These results challenge the concept that neural representation of faces is distributed and overlapping and suggest that the fusiform gyros is tightly linked to the awareness of faces. (C) 2003 Elsevier Inc. All rights reserved.