Concordance between perceptual and categorical repetition effects in the ventral visual stream
Concordance between perceptual and categorical repetition effects in the ventral visual stream
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DOI：
10.1152/jn.01138.2010
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发表时间：
2011-07-01
影响因子：
2.5
通讯作者：
Caramazza, Alfonso
中科院分区：
文献类型：
--
作者：
Fairhall, Scott L.;Anzellotti, Stefano;Caramazza, Alfonso
张建军，张建军，张建军，等。知觉重复与分类重复效应的研究进展。[J]中国生物医学工程学报，2016,31(2):391 - 398。首次发表于2011年5月4日；doi: 10.1152 / jn.01138.2010。对象的分类过程是人类认知的一个组成部分。在本研究中，我们使用重复抑制范式来确定腹侧视觉皮层对分类关系的敏感程度。通过动物和工具的图像，比较和对比了知觉（刺激水平）和分类重复（基本水平和领域水平）在腹侧视觉流的领域选择和层次组织中的抑制。知觉和分类重复效应都对区域选择性调谐不敏感，在对图像响应最大的区域中抑制最为突出，与刺激域无关。同样，知觉重复和分类重复都会在视觉层次的多个区域产生重叠抑制。观察到一些不同的模式。右侧颞上沟仅在基础水平（同一基本物体的不同样例）表现出重复抑制，右侧梭状回前部对直接刺激重复敏感，但对基本水平的分类重复不敏感。由于知觉重复效应和分类重复效应的反应特征之间的高度一致性，我们认为它们是由共同的认知机制产生的。
Fairhall SL, Anzellotti S, Pajtas PE, Caramazza A. Concordance between perceptual and categorical repetition effects in the ventral visual stream. J Neurophysiol 106: 398-408, 2011. First published May 4, 2011; doi:10.1152/jn.01138.2010.-The process of object categorization is an integral part of human cognition. In the present study, we have used a repetition suppression paradigm to determine the degree to which the ventral visual cortex is sensitive to categorical relationships. By using images of animals and tools, suppression across perceptual (stimulus level) and categorical repetitions (basic level and domain level) was compared and contrasted across the domain-selective and hierarchical organization of the ventral visual stream. Both perceptual and categorical repetition effects were insensitive to domain-selective tuning, with suppression most prominent in regions responding maximally to images, irrespective of stimulus domain. Likewise, both perceptual and categorical repetition produced overlapping suppression across multiple regions of the visual hierarchy. Some divergent patterns were observed. The right superior temporal sulcus demonstrated repetition suppression only at the basic level (different examples of the same basic object), and the right anterior fusiform gyrus was sensitive to direct stimulus repetition but not basic-level categorical repetition. Because of the high concordance between the response profiles of perceptual and categorical repetition effects, we conclude they arise from a common cognitive mechanism.