Distributed subordinate specificity for bodies, faces, and buildings in human ventral visual cortex
Distributed subordinate specificity for bodies, faces, and buildings in human ventral visual cortex
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DOI：
10.1016/j.neuroimage.2009.11.022
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发表时间：
2010-02-15
期刊：
影响因子：
5.7
通讯作者：
Wagemans, Johan
中科院分区：
文献类型：
--
作者：
Op de Beeck, Hans P.;Brants, Marijke;Wagemans, Johan
先前的研究已经揭示了人类视觉皮层中对面孔、无头尸体和建筑物有强烈偏好的区域。我们调查了这些类别选择区域的活动模式是否与物体之间的从属区别有关。我们的实验包括两种类型的面孔（老人脸和婴儿脸），身体部位（手和躯干）和建筑物（农村建筑物和摩天大楼）。多体素模式分析显示非常明显的差异，手和躯干之间的激活模式，和较小的，但显着的差异，在激活模式之间的两个面的条件和两个建筑物的条件。下属的特异性是非常分散的，因为所有类别选择性区域的手和躯干之间的区别是最有选择性的，独立于他们的首选类别。手与躯干的选择性保留在所有类别选择区域的样本和图像方向，表明分布下属的选择性是相对不变的和高阶的图像属性。(C)2009 Elsevier Inc. All rights reserved.
Previous studies have revealed regions in human visual cortex with a strong preference for faces, headless bodies, and buildings. We investigated whether the pattern of activity in these category-selective regions is related to more subordinate distinctions among objects. Our experiments included two types of faces (elderly faces and baby faces), body parts (hands and torsos), and buildings (rural buildings and skyscrapers). Multi-voxel pattern analyses revealed very clear differences in the activation pattern between hands and torsos, and smaller but significant differences in the activation pattern between the two face conditions and between the two building conditions. The subordinate specificity was very distributed, as all category-selective regions were most selective for the distinction between hands and torsos, independently from their preferred category. The selectivity for hands versus torsos was preserved across exemplars and image orientations in all category-selective regions, indicating that the distributed subordinate selectivity is related to relatively invariant and higher-order properties of the images. (C) 2009 Elsevier Inc. All rights reserved.