Functional dissociation of the left ventral occipito-temporal cortex in the direct and indirect retrieval of color features

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	Functional dissociation of the left ventral occipito-temporal cortex in the direct and indirect retrieval of color features
	Wang, Yan 1,2; Zhao, Jinghui 2; Yang, Jiongjiong 3; Ma, Lin 4; He, Sheng 5; Weng, Xuchu 2; Y. Wang
刊名	PROGRESS IN NATURAL SCIENCE
	2009-11-10
卷号	19 期号:11 页码:1553-1559
关键词	Occipito-temporal cortex Color perception Reactivation Retrieval fMRI
ISSN号	1002-0071
文献子类	Article
英文摘要	Previous studies suggest that the storage/retrieval of object features is related to brain regions that are involved in the processing of these features. However, it remains unclear whether, and under what conditions, retrieving information about a feature reactivates the same region that specifically supports that feature's perception. In this functional magnetic resonance imaging ( fMRI) study, we compared brain activation in the left ventral occipito-temporal cortex during subjects performing a color perception task, and direct and indirect color retrieval tasks. After performing the color perception task to localize the regions responsible for color perception, subjects were intensively trained ( outside of the scanner) to remember associations between colors and motion directions, and associations between colors and letters. Then, they were asked to perform two color retrieval tasks in the scanner, with stationary and gray scaled images as control stimuli. The results showed that the bilateral posterior occipito-temporal cortex was activated during the color perception task. When color information was retrieved by direct cues ( motion direction), the same bilateral occipito-temporal region was activated. When color information was retrieved indirectly ( judging whether a motion direction matched a letter by their associated colors), a region anterior to the color perception region in the left ventral occipito-temporal cortex was additionally activated. Our results provided evidence for the functional dissociation in the two subregions of the ventral occipito-temporal cortex during retrieval of color features: the posterior area might relate to perceptual features of color, while the anterior region might relate to the knowledge of associations with color.; Previous studies suggest that the storage/retrieval of object features is related to brain regions that are involved in the processing of these features. However, it remains unclear whether, and under what conditions, retrieving information about a feature reactivates the same region that specifically supports that feature's perception. In this functional magnetic resonance imaging ( fMRI) study, we compared brain activation in the left ventral occipito-temporal cortex during subjects performing a color perception task, and direct and indirect color retrieval tasks. After performing the color perception task to localize the regions responsible for color perception, subjects were intensively trained ( outside of the scanner) to remember associations between colors and motion directions, and associations between colors and letters. Then, they were asked to perform two color retrieval tasks in the scanner, with stationary and gray scaled images as control stimuli. The results showed that the bilateral posterior occipito-temporal cortex was activated during the color perception task. When color information was retrieved by direct cues ( motion direction), the same bilateral occipito-temporal region was activated. When color information was retrieved indirectly ( judging whether a motion direction matched a letter by their associated colors), a region anterior to the color perception region in the left ventral occipito-temporal cortex was additionally activated. Our results provided evidence for the functional dissociation in the two subregions of the ventral occipito-temporal cortex during retrieval of color features: the posterior area might relate to perceptual features of color, while the anterior region might relate to the knowledge of associations with color. (C) 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
学科主题	认知心理学
语种	英语
WOS记录号	WOS:000271340100013
公开日期	2011-08-22
内容类型	期刊论文
源URL	[http://ir.psych.ac.cn/handle/311026/5428]
专题	心理研究所_中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Y. Wang
作者单位	1.Capital Normal Univ, Beijing Key Lab Learning & Cognit, Dept Psychol, Beijing 100048, Peoples R China 2.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China 3.Peking Univ, Dept Psychol, Beijing 100871, Peoples R China 4.Peoples Liberat Army Gen Hosp, Dept Radiol, Beijing 100853, Peoples R China 5.Univ Minnesota, Dept Psychol, Minneapolis, MN 55455 USA
推荐引用方式 GB/T 7714	Wang, Yan,Zhao, Jinghui,Yang, Jiongjiong,et al. Functional dissociation of the left ventral occipito-temporal cortex in the direct and indirect retrieval of color features[J]. PROGRESS IN NATURAL SCIENCE,2009,19(11):1553-1559.
APA	Wang, Yan.,Zhao, Jinghui.,Yang, Jiongjiong.,Ma, Lin.,He, Sheng.,...&Y. Wang.(2009).Functional dissociation of the left ventral occipito-temporal cortex in the direct and indirect retrieval of color features.PROGRESS IN NATURAL SCIENCE,19(11),1553-1559.
MLA	Wang, Yan,et al."Functional dissociation of the left ventral occipito-temporal cortex in the direct and indirect retrieval of color features".PROGRESS IN NATURAL SCIENCE 19.11(2009):1553-1559.