Overlap and dissociation of semantic processing of Chinese characters, English words, and pictures: Evidence from fMRI
Overlap and dissociation of semantic processing of Chinese characters, English words, and pictures: Evidence from fMRI
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DOI：
10.1006/nimg.2000.0631
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发表时间：
2000-10-01
期刊：
影响因子：
5.7
通讯作者：
Chee, M
中科院分区：
文献类型：
--
作者：
Chee, MWL;Weekes, B;Chee, M
本研究采用功能磁共振成像技术对汉字加工的功能解剖进行了研究。右利手的中英双语被试对文字和图片进行了语义或知觉的大小判断。联合激活字符和图片语义任务的大小判断任务相比，包括左前额叶区（BA 9，44，45），左后颞叶，左梭状回，左顶叶区域。字符处理产生更大的激活比图片处理在左中，后颞叶以及左前额叶区域。枕外侧区在图片语义加工过程中比文字语义加工过程中更为活跃。当在另一组双语参与者中比较英语单词和图片时，观察到类似的激活和对比模式。然而，在左前额叶区域，单词和图片语义加工之间的对比度小于字符和图片加工之间的对比度。当字符和单词的语义处理直接比较在第三组中，激活峰的位点是相似的，在两种语言，但汉字语义处理与一个更大的MR信号的变化。汉字、英语单词和图片的语义加工激活了一个共同的语义系统，在这个系统中存在着情态差异。汉字的语义加工更接近于英语单词而不是图片。(C)北京大学出版社.
The functional anatomy of Chinese character processing was investigated using fMRI. Right-handed Mandarin-English bilingual participants made either semantic or perceptual size judgements with characters and pictures. Areas jointly activated by character and picture semantic tasks compared to size judgement tasks included the left prefrontal region (BA 9, 44, 45), left posterior temporal, left fusiform, and left parietal regions. Character processing produced greater activation than picture processing in the left mid and posterior temporal as well as left prefrontal regions. The lateral occipital regions were more active during picture semantic processing than character semantic processing. A similar pattern of activation and contrasts was observed when English words and pictures were compared in another set of bilingual participants. However, there was less contrast between word and picture semantic processing than between character and picture processing in the left prefrontal region. When character and word semantic processing were compared directly in a third group, the loci of activation peaks was similar in both languages but Chinese character semantic processing was associated with a larger MR signal change. The semantic processing of Chinese characters, English words, and pictures activates a common semantic system within which there are modality-specific differences. The semantic processing of Chinese characters more closely resembles English words than pictures. (C) 2000 Academic Press.