Encoding the identity and location of objects in human LOC
Encoding the identity and location of objects in human LOC
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DOI：
10.1016/j.neuroimage.2010.09.044
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发表时间：
2011-02-01
期刊：
影响因子：
5.7
通讯作者：
Haynes, John-Dylan
中科院分区：
文献类型：
--
作者：
Cichy, Radoslaw Martin;Chen, Yi;Haynes, John-Dylan
我们能够识别物体，而与它们在视野中的位置无关。与此同时，我们还跟踪物体的位置，以确定自己的方向，并与环境互动。枕侧复合体(LOC)被认为是代表客体身份的主要皮质区域。然而，LOC在多大程度上也代表了物体的位置仍然存在争议。在这项研究中，我们使用高分辨率fMRI结合多体素模式分类来研究来自四个不同类别的三个对象样本在两个不同位置的皮质编码。这种方法使我们能够在类别和样本级别上研究LOC中的位置容忍对象信息和对象容忍位置信息。我们在类别和样本水平上发现了LOC中位置容忍对象信息和对象容忍位置信息的证据。我们的结果进一步突出了腹侧视觉通路中身份和位置信息的混合。(C)2010 Elsevier Inc.保留所有权利。
We are able to recognize objects independent of their location in the visual field. At the same time, we also keep track of the location of objects to orient ourselves and to interact with the environment. The lateral occipital complex (LOC) has been suggested as the prime cortical region for representation of object identity. However, the extent to which LOC also represents object location has remained debated. In this study we used high-resolution fMRI in combination with multivoxel pattern classification to investigate the cortical encoding of three object exemplars from four different categories presented in two different locations. This approach allowed us to study location-tolerant object information and object-tolerant location information in LOC, both at the level of categories and exemplars. We found evidence for both location-tolerant object information and object-tolerant location information in LOC at the level of categories and exemplars. Our results further highlight the mixing of identity and location information in the ventral visual pathway. (C) 2010 Elsevier Inc. All rights reserved.