The time course of visual categorization: Electrophysiological evidence from ERP

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	The time course of visual categorization: Electrophysiological evidence from ERP
	Chen, Antao ; Li, Hong ; Qiu, Jiang ; Luo, Yuejia
摘要	Visual categorization can be derived from interaction between inputting features set (IFS) from outside stimuli and anticipating features set (AFS) from concept, and such interaction can take two forms: match extraction and conflict control. Using ERP recording, we investigated the temporal course of visual categorization. The results indicated that the larger the AFS, the higher the amplitude of the N1 was generated, which demonstrated the effect of the AFS on the attention. When the size of the AFS was larger than or equal to 2, prominent N2 component was elicited, which demonstrated the effect of conflict when the feature of IFS mismatched with the feature of the AFS. The judgment of category was manifested on the LPC component, and this component was also sensitive to conflict control. Based on the results, we proposed that the temporal course of visual categorization was as follows: selective attention, feature perception, feature match/extraction and judgment of category/conflict control. Among those processes, the judgment of category is the core processing; however the former three sub-processes form the base of categorization. The results are in support of the idea that LPC is responsible for high-level categorization process.; Visual categorization can be derived from interaction between inputting features set (IFS) from outside stimuli and anticipating features set (AFS) from concept, and such interaction can take two forms: match extraction and conflict control. Using ERP recording, we investigated the temporal course of visual categorization. The results indicated that the larger the AFS, the higher the amplitude of the N1 was generated, which demonstrated the effect of the AFS on the attention. When the size of the AFS was larger than or equal to 2, prominent N2 component was elicited, which demonstrated the effect of conflict when the feature of IFS mismatched with the feature of the AFS. The judgment of category was manifested on the LPC component, and this component was also sensitive to conflict control. Based on the results, we proposed that the temporal course of visual categorization was as follows: selective attention, feature perception, feature match/extraction and judgment of category/conflict control. Among those processes, the judgment of category is the core processing; however the former three sub-processes form the base of categorization. The results are in support of the idea that LPC is responsible for high-level categorization process.
关键词	visual categorization event-related potentials AFS (anticipating features set) IFS (inputting features set) conflict control late positive complex (LPC)
学科领域	认知神经科学
	2006-07-01
语种	英语
发表期刊	CHINESE SCIENCE BULLETIN
ISSN	1001-6538
卷号	51 期号:13 页码:1586-1592
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS记录号	WOS:000240487600009
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/5809
专题	中国科学院心理研究所回溯数据库(1956-2010)
作者单位	1.SW Univ, Sch Psychol & MOE, Chongqing 400715, Peoples R China 2.SW Univ, Key Lab Cognit & Personal, Chongqing 400715, Peoples R China 3.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Psychol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Chen, Antao,Li, Hong,Qiu, Jiang,et al. The time course of visual categorization: Electrophysiological evidence from ERP[J]. CHINESE SCIENCE BULLETIN,2006,51(13):1586-1592.
APA	Chen, Antao,Li, Hong,Qiu, Jiang,&Luo, Yuejia.(2006).The time course of visual categorization: Electrophysiological evidence from ERP.CHINESE SCIENCE BULLETIN,51(13),1586-1592.
MLA	Chen, Antao,et al."The time course of visual categorization: Electrophysiological evidence from ERP".CHINESE SCIENCE BULLETIN 51.13(2006):1586-1592.

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