Orthographic and phonological processing of Chinese characters: an fMRI study
Orthographic and phonological processing of Chinese characters: an fMRI study
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DOI：
10.1016/j.neuroimage.2003.12.007
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发表时间：
2004-04-01
期刊：
影响因子：
5.7
通讯作者：
Hsieh, JC
中科院分区：
文献类型：
--
作者：
Kuo, WJ;Yeh, TC;Hsieh, JC
本研究采用功能磁共振成像技术（fMRI）探讨汉字字形和语音加工的神经机制。设计了四个任务，包括一个同音判断和三个物理判断的字符，伪字符，韩国一样的无意义的数字。左枕颞区、左背侧加工流和右额中回构成了一个网络，用于正文字加工，而左运动前回、左额中/下回、补充运动区（SMA）和左颞顶区则协同进行语音加工。左下额叶皮层的腹侧部分对字符刺激有特异性反应，这表明该区域对语言材料具有普遍的词汇处理作用。汉语同音字判断对背视流的激活更强，这表明汉字的语音表征与相应的正字法知觉之间存在紧密的耦合。不同水平的汉语正字法和语音加工伴随着区域的参与，这与分布式并行加工的概念是一致的。(C)2004年爱思唯尔公司All rights reserved.
The present study used functional magnetic resonance imaging (fMRI) to investigate the neural mechanisms underlying the orthographic and phonological processing of Chinese characters. Four tasks were devised, including one homophone judgment and three physical judgments of characters, pseudo-characters, and Korean-like nonsense figures. While the left occipitotemporal region, left dorsal processing stream, and right middle frontal gyrus constitute a network for orthographic processing, the left premotor gyrus, left middle/inferior frontal gyrus, supplementary motor area (SMA), and the left temporoparietal region work in concert for phonological processing. The ventral part of the left inferior frontal cortex responds specifically to the character stimuli, suggesting a general lexical processing role for this region for linguistic material. The stronger activation of the dorsal visual stream by Chinese homophone judgment pinpoints a tight coupling between phonological representation of Chinese characters and corresponding orthographic percepts. The concomitant engagement of sets of regions for different levels of Chinese orthographic and phonological processing is consistent with the notion of distributed parallel processing. (C) 2004 Elsevier Inc. All rights reserved.