The role of inferior frontal gyrus and inferior parietal lobule in semantic processing of Chinese characters.
The role of inferior frontal gyrus and inferior parietal lobule in semantic processing of Chinese characters.
复制标题
额下回和顶下小叶在汉字语义加工中的作用.
DOI：
10.1007/s00221-009-1942-y
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发表时间：
2009-10
影响因子：
2
通讯作者：
Booth, James R.
中科院分区：
文献类型：
--
作者：
Chou, Tai-Li;Chen, Chih-Wei;Wu, Mei-Yao;Booth, James R.
采用功能磁共振成像技术研究汉字语义判断的神经相关机制。成年参与者被要求指出，如果字符对相关的意义，安排在一个连续的变量，根据关联强度。这种参数操作允许更精确地确定左顶下小叶在加工意义中的作用，这在以前的中国研究中还没有报道。与以前的英语研究结果一致，参与者显示激活左额下回（BA 47，45）和左后颞中回（BA 21）。语义关联性强的汉字在左侧顶下小叶（BA 39）的激活更强，表明高度相关的语义特征的整合更强。相比之下，字符与较弱的语义关联引起更大的激活，在前腹侧区（BA 47）和中腹侧区的左额下回（BA 45），这表明一个受控的提取过程和选择过程。我们的研究结果的关联强度进行了讨论，提出了一个神经解剖模型的语义处理。
Functional magnetic resonance imaging was used to explore the neural correlates of semantic judgments to Chinese characters. Adult participants were asked to indicate if character pairs were related in meaning that were arranged in a continuous variable according to association strength. This parametric manipulation allowed for a more precise determination of the role of the left inferior parietal lobule in processing meaning, which has not been reported in previous Chinese studies. Consistent with previous findings in English, participants showed activation in left inferior frontal gyrus (BA 47, 45) and left posterior middle temporal gyrus (BA 21). Characters with stronger semantic association elicited greater activation in left inferior parietal lobule (BA 39), suggesting stronger integration of highly related semantic features. By contrast, characters with weaker semantic association elicited greater activation in both an anterior ventral region (BA 47) and a mid-ventral region of left inferior frontal gyrus (BA 45), suggesting a controlled retrieval process and a selection process. Our findings of association strength are discussed in a proposed neuro-anatomical model of semantic processing.
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