Left-lateralized early neurophysiological response for Chinese characters in young primary school children
Left-lateralized early neurophysiological response for Chinese characters in young primary school children
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小学生汉字左偏早期神经生理反应
DOI：
10.1016/j.neulet.2011.02.002
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发表时间：
2011-04-04
影响因子：
2.5
通讯作者：
Weng, Xuchu
中科院分区：
文献类型：
--
作者：
Cao, Xiaohua;Li, Su;Weng, Xuchu
与左后电极处的其他刺激相比，成人读者始终显示出增强的与事件相关的电位（ERP）响应N170，用于视觉单词。用字母语言单词的发展研究表明，这种针对印刷的神经生理学专业化从6岁到10岁的年龄迅速发展，并建立在10-11岁左右。在这里，我们首次报道了中国儿童中与单词相关的N170的开发，学会阅读中文，这是一种与视觉和语言特征中的字母脚本完全不同的逻辑写作系统。我们记录了ERP的回答，并在7、9和11岁的三组小学生和大学生中引起了汉字和共同物品的线条图。结果表明，在这个7岁组中，汉字引起的N170的幅度明显大于11岁的群体和成年读者。值得注意的是，与线条图相比，所有四个年龄段 - 甚至最年轻的群体都显示出对中文字符的N170响应的增加和左侧的N170响应，这表明早在7年就已经出现了一种相对专业的处理汉字的机制。年龄。我们的结果加上对非中国儿童读者的研究，表明与单词相关的N170的发展模式在不同的脚本中非常相似，这可能反映了儿童通过日常阅读获得的视觉处理专业知识的增加。 （c）2011 Elsevier Ireland Ltd.保留所有权利。
Adult readers consistently show an enhanced early event-related potential (ERP) response, N170, for visual words compared with other stimuli at left posterior electrodes. Developmental studies with words in alphabetic languages showed that this neurophysiological specialization for print develops rapidly from 6 to 10-years of age and becomes established around 10-11 years of age. Here we report for the first time the development of the word-related N170 in Chinese children learning to read Chinese, a logographic writing system radically different from alphabetic scripts in visual and linguistic features. We recorded ERP responses elicited by Chinese characters and line drawings of common objects in three groups of primary school children at 7, 9, and 11 years of age as well as college students. Results showed that the amplitude of N170 evoked by Chinese characters in the 7-year-old group was significantly larger than that in the 11-year-old group and the adult readers. Remarkably, all four age groups - even the youngest group - showed an increased and left-lateralized N170 response for Chinese characters, as compared with line drawings, suggesting that a relatively specialized mechanism for processing Chinese characters is already emergent by as early as 7 years of age. Our results, combined with studies of non-Chinese child readers suggest that the developmental pattern of word-related N170 is highly similar across different scripts, possibly reflecting increased visual processing expertise that children acquire through everyday reading. (C) 2011 Elsevier Ireland Ltd. All rights reserved.