Effects of visual complexity and sublexical information in the occipitotemporal cortex in the reading of Chinese phonograms: A single-trial analysis with MEG
Effects of visual complexity and sublexical information in the occipitotemporal cortex in the reading of Chinese phonograms: A single-trial analysis with MEG
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DOI：
10.1016/j.bandl.2010.10.002
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发表时间：
2011-04-01
影响因子：
2.5
通讯作者：
Marantz, Alec
中科院分区：
文献类型：
--
作者：
Hsu, Chun-Hsien;Lee, Chia-Ying;Marantz, Alec
我们采用线性混合效应模型估计视觉形式和汉字的语言特性对M100和M170脑磁图反应的影响，从单次试验数据的中国和英语发言者在中国词汇决策任务。皮质约束最小范数估计用于计算功能定义的感兴趣区域中的M100和M170响应的激活。中文和英文受试者的M100反应都倾向于增加对笔画数高的字符的反应。英语被试的M170反应呈现后验分布，仅反映了字符视觉复杂性的影响。另一方面，中国被试在阅读笔画数较多的汉字时，左半球的M170增加，而在阅读语义偏旁组合性较小的汉字时，右半球的M170增加。我们的研究结果表明，专业知识的话，词的形式分解的基础上的加工在左，右枕颞区的汉字阅读的中国人。(C)2010年爱思唯尔公司All rights reserved.
We employ a linear mixed-effects model to estimate the effects of visual form and the linguistic properties of Chinese characters on M100 and M170 MEG responses from single-trial data of Chinese and English speakers in a Chinese lexical decision task. Cortically constrained minimum-norm estimation is used to compute the activation of M100 and M170 responses in functionally defined regions of interest. Both Chinese and English participants' M100 responses tend to increase in response to characters with a high numbers of strokes. English participants' M170 responses show a posterior distribution and only reflect the effect of the visual complexity of characters. On the other hand, the Chinese participants' left hemisphere M170 is increased when reading characters with high number of strokes, and their right hemisphere M170 is increased when reading characters with small combinability of semantic radicals. Our results suggest that expertise with words and the decomposition of word forms underlies processing in the left and right occipitotemporal regions in the reading of Chinese characters by Chinese speakers. (C) 2010 Elsevier Inc. All rights reserved.