Fuzzy segmentation spatiotemporal patterns of cognitive potential into microstates

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	Fuzzy segmentation spatiotemporal patterns of cognitive potential into microstates
	Zhou, S ; Wang, CM ; Wei, JH ; Wu, SL ; Shu Zhou
摘要	Fuzzy c-mean algorithm was applied to segment spatiotemporal patterns of brainwave into microstates and memberships. The optimal clustering number was estimated with both the trends of objective function and the eigenvalue number of microstates. Comparable spatial patterns may occur at different temporal moments in consideration of fuzzy index that is beyond the Limit of serial processing. Those techniques were illustrated with multichannel event-related potentials recorded from 9 subjects during Stroop test. Statistical parametric map of F value suggested that significant task (color decision and word decision) effect involve widespread cortical regions after stimulus onset 280 ms and this result supports the hypothesis that Stroop interference derives from response competition during post-perception stage. As significant stimulus (congruent stimulus and incongruent stimulus) effect only involves several separate visual regions within 100 ms after stimulus presentation, it may reflect top-down attentional regulation.; Fuzzy c-mean algorithm was applied to segment spatiotemporal patterns of brainwave into microstates and memberships. The optimal clustering number was estimated with both the trends of objective function and the eigenvalue number of microstates. Comparable spatial patterns may occur at different temporal moments in consideration of fuzzy index that is beyond the Limit of serial processing. Those techniques were illustrated with multichannel event-related potentials recorded from 9 subjects during Stroop test. Statistical parametric map of F value suggested that significant task (color decision and word decision) effect involve widespread cortical regions after stimulus onset 280 ms and this result supports the hypothesis that Stroop interference derives from response competition during post-perception stage. As significant stimulus (congruent stimulus and incongruent stimulus) effect only involves several separate visual regions within 100 ms after stimulus presentation, it may reflect top-down attentional regulation.
关键词	fuzzy C-mean algorithm clustering analysis statistical parametric map (SPM) Stroop test event-related potentials (ERP) spatiotemporal pattern
学科领域	生理心理学/生物心理学
	1999-09-01
语种	英语
发表期刊	BRAIN TOPOGRAPHY
ISSN	0896-0267
卷号	12 期号:1 页码:61-67
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS记录号	WOS:000083775000006
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.psych.ac.cn/handle/311026/5433
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Shu Zhou
作者单位	1.Chinese Acad Sci, Inst Psychol, Brain Behav Res Ctr, Beijing 100101, Peoples R China 2.First Mil Med Univ, Nanfang Hosp, Brain Res Ctr, Guangzhou, Peoples R China 3.Beijing Normal Univ, Dept Psychol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Zhou, S,Wang, CM,Wei, JH,et al. Fuzzy segmentation spatiotemporal patterns of cognitive potential into microstates[J]. BRAIN TOPOGRAPHY,1999,12(1):61-67.
APA	Zhou, S,Wang, CM,Wei, JH,Wu, SL,&Shu Zhou.(1999).Fuzzy segmentation spatiotemporal patterns of cognitive potential into microstates.BRAIN TOPOGRAPHY,12(1),61-67.
MLA	Zhou, S,et al."Fuzzy segmentation spatiotemporal patterns of cognitive potential into microstates".BRAIN TOPOGRAPHY 12.1(1999):61-67.

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