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How perceptual processes help to generate new meaning: An EEG study of chunk decomposition in Chinese characters
Wu, Lili1; Knoblich, Guenther2; Wei, Gaoxia1; Luo, Jing1; J. Luo
2009-10-16
Source PublicationBRAIN RESEARCH
ISSN0006-8993
SubtypeArticle
Volume1296Pages:104-112
AbstractChunk decomposition has been regarded as an important process in problem solving that helps problem solvers to generate new solution paths through changing inappropriate problem representations. We studied the neural bases of chunk decomposition in Chinese characters using the electroencephalogram (EEG). Participants decomposed Chinese characters either at the level of radicals or at the level of strokes to generate new target characters with a different meaning. We hypothesized that decomposition at the stroke levei would require a more fundamental change in the problem representation that should involve differences in basic visual processing. To test this hypothesis, we compared the alpha rhythm (8-13 Hz) over parietal-occipital regions between the two different conditions. The regrouping of tight chunks (stroke level) exhibited a stronger alpha activation than the regrouping of loose chunks approximately 500 ms prior to response. Thus visual areas were less active during the decomposition of tight chunks. Together with a previous fMRI study the results provide convincing evidence that attenuation of early visual information is required to generate new meaning.; Chunk decomposition has been regarded as an important process in problem solving that helps problem solvers to generate new solution paths through changing inappropriate problem representations. We studied the neural bases of chunk decomposition in Chinese characters using the electroencephalogram (EEG). Participants decomposed Chinese characters either at the level of radicals or at the level of strokes to generate new target characters with a different meaning. We hypothesized that decomposition at the stroke levei would require a more fundamental change in the problem representation that should involve differences in basic visual processing. To test this hypothesis, we compared the alpha rhythm (8-13 Hz) over parietal-occipital regions between the two different conditions. The regrouping of tight chunks (stroke level) exhibited a stronger alpha activation than the regrouping of loose chunks approximately 500 ms prior to response. Thus visual areas were less active during the decomposition of tight chunks. Together with a previous fMRI study the results provide convincing evidence that attenuation of early visual information is required to generate new meaning. (C) 2009 Elsevier B.V. All rights reserved.
KeywordInsight problem solving Chunk decomposition Alpha rhythm Parietal-occipital area
Subject Area认知神经科学
Indexed BySCI
Language英语
WOS IDWOS:000271168600011
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/5455
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding AuthorJ. Luo
Affiliation1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China
2.Radboud Univ Nijmegen, Donders Inst Brain Cognit & Behav, Ctr Cognit, Nijmegen, Netherlands
First Author AffilicationKey Laboratory of Mental Health, CAS
Recommended Citation
GB/T 7714
Wu, Lili,Knoblich, Guenther,Wei, Gaoxia,et al. How perceptual processes help to generate new meaning: An EEG study of chunk decomposition in Chinese characters[J]. BRAIN RESEARCH,2009,1296:104-112.
APA Wu, Lili,Knoblich, Guenther,Wei, Gaoxia,Luo, Jing,&J. Luo.(2009).How perceptual processes help to generate new meaning: An EEG study of chunk decomposition in Chinese characters.BRAIN RESEARCH,1296,104-112.
MLA Wu, Lili,et al."How perceptual processes help to generate new meaning: An EEG study of chunk decomposition in Chinese characters".BRAIN RESEARCH 1296(2009):104-112.
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