Neural mechanisms underlying the processing of Chinese words: An fMRI study
Neural mechanisms underlying the processing of Chinese words: An fMRI study
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DOI：
10.1016/j.neures.2005.02.005
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发表时间：
2005-06-01
影响因子：
2.9
通讯作者：
Shibasaki, H
中科院分区：
文献类型：
--
作者：
Dong, Y;Nakamura, K;Shibasaki, H
本研究采用功能磁共振成像（fMRI）技术，探讨了汉字单字词字形、语音和语义加工的神经机制。12名母语为汉语的右撇子参与了这项研究。实验采用了三个基本的语言学任务，包括正字法判断、语音匹配和语义联想任务。我们的研究结果表明，强大的激活左后下颞叶皮层（BA 37）的所有三个任务。而语音匹配任务产生左偏激活的下额叶和顶叶区域，语义联想任务显示了相当大的双边激活下额叶和枕顶区。语音匹配和语义关联任务之间的直接比较产生了语义相关的激活在左额下回（BA 47）和右额下回（布罗卡同源; BA 45）的前部。在行为上，语音匹配和语义联想任务的反应时没有差异。结果表明，汉语单字的意义和语音加工过程中存在不同的神经通路。本研究提供了汉语不同成分加工的神经基质的系统信息。(c)2005年Elsevier爱尔兰有限公司和日本神经科学学会。All rights reserved.
The present study employed functional magnetic resonance imaging (fMRI) to investigate the neural mechanisms underlying orthographic, phonological and semantic processing of single character Chinese words. Twelve right-handed native Chinese speakers participated in the study. Three fundamental linguistic tasks including orthographic judgment, phonological matching and semantic association task were used. Our results demonstrated robust activation in the left posterior inferior temporal cortex (BA 37) for all three tasks. While the phonological matching task produced left-lateralized activation in the inferior frontal and parietal regions, semantic association task showed considerable bilateral activation in the inferior frontal and occipito-parietal regions. Direct comparison between phonological matching and semantic association task yielded semantic related activation in the anterior portion of the left inferior frontal gyrus (BA 47) and the right inferior frontal region (Broca's homology; BA 45). Behaviorally, there was no difference in response time between phonological matching and semantic association task. Our findings suggested that differential neural pathways were involved in the processing of meaning and sound of single-character Chinese words. The present study provided systemic information of the neural substrates underlying the processing of different components of Chinese language. (c) 2005 Elsevier Ireland Ltd and the Japan Neuroscience Society. All rights reserved.