A meta-analysis of fMRI studies on Chinese orthographic, phonological, and semantic processing
A meta-analysis of fMRI studies on Chinese orthographic, phonological, and semantic processing
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DOI：
10.1016/j.neuroimage.2012.06.047
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发表时间：
2012-10-15
期刊：
影响因子：
5.7
通讯作者：
Chen, Shen-Hsing Annabel
中科院分区：
文献类型：
--
作者：
Wu, Chiao-Yi;Ho, Moon-Ho Ringo;Chen, Shen-Hsing Annabel
越来越多的神经影像学证据表明，汉字处理因其独特的语言特征而从字母语言中招募差异激活。随着最近对汉字处理的研究越来越多，我们应用元分析方法来总结以前的发现，并独立检查汉字的正字法、音韵和语义处理的神经网络。使用激活似然估计（ALE）方法分析了八项拼写任务类别的研究、十一项语音任务类别的研究和十五项语义任务类别的研究。在左侧额中回、左侧顶上小叶和左侧中梭状回中发现了三个语言处理组件之间的聚合激活，这表明无论任务性质如何，字符识别过程都有一个共同的子网络。随着任务需求的增加，左侧顶下小叶和右侧颞上回专门负责语音处理，而左侧颞中回则参与语义处理。在左侧额下回发现功能分离，后背侧部分用于语音处理，前腹侧部分用于语义处理。此外，发现双侧腹侧枕颞区参与语音和语义处理。这些结果提供了对汉语拼字、语音和语义处理背后的神经网络的更好理解，并巩固了与基于字母语言的通用语言网络相比，额外招募左侧额中回和右侧梭状回进行汉字处理的发现。 (C) 2012 Elsevier Inc. 保留所有权利。
A growing body of neuroimaging evidence has shown that Chinese character processing recruits differential activation from alphabetic languages due to its unique linguistic features. As more investigations on Chinese character processing have recently become available, we applied a meta-analytic approach to summarize previous findings and examined the neural networks for orthographic, phonological, and semantic processing of Chinese characters independently. The activation likelihood estimation (ALE) method was used to analyze eight studies in the orthographic task category, eleven in the phonological and fifteen in the semantic task categories. Converging activation among three language-processing components was found in the left middle frontal gyrus, the left superior parietal lobule and the left mid-fusiform gyrus, suggesting a common sub-network underlying the character recognition process regardless of the task nature. With increasing task demands, the left inferior parietal lobule and the right superior temporal gyrus were specialized for phonological processing, while the left middle temporal gyrus was involved in semantic processing. Functional dissociation was identified in the left inferior frontal gyrus, with the posterior dorsal part for phonological processing and the anterior ventral part for semantic processing. Moreover, bilateral involvement of the ventral occipito-temporal regions was found for both phonological and semantic processing. The results provide better understanding of the neural networks underlying Chinese orthographic, phonological, and semantic processing, and consolidate the findings of additional recruitment of the left middle frontal gyrus and the right fusiform gyrus for Chinese character processing as compared with the universal language network that has been based on alphabetic languages. (C) 2012 Elsevier Inc. All rights reserved.