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
发表期刊BRAIN RESEARCH
ISSN0006-8993
文章类型Article
卷号1296页码:104-112
摘要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.; 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.
关键词Insight problem solving Chunk decomposition Alpha rhythm Parietal-occipital area
学科领域认知神经科学
收录类别SCI
语种英语
WOS记录号WOS:000271168600011
引用统计
被引频次:14[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/311026/5455
专题中国科学院心理研究所回溯数据库(1956-2010)
通讯作者J. Luo
作者单位1.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
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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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