Neural correlates of bilingual language control during interlingual homograph processing in a logogram writing system
Neural correlates of bilingual language control during interlingual homograph processing in a logogram writing system
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DOI：
10.1016/j.bandl.2017.06.006
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发表时间：
2017-11-01
影响因子：
2.5
通讯作者：
Kawashima, Ryuta
中科院分区：
文献类型：
--
作者：
Hsieh, Ming-Che;Jeong, Hyeonjeong;Kawashima, Ryuta
使用字母语言的双语研究表明，在单词识别过程中，两种语言的激活是平行的。然而，很少有人知道的大脑机制的语言控制过程中的文字理解与语标书写系统。我们操纵了词的类型（语际同形异义词（IH），同源词和语言特定的词）和参与者的类型（中国（L1）日本（L2）双语者与日本单语者）。双语者加工IH时，双侧额下回、辅助运动区、尾状核和左侧梭状回的激活程度高于同源词。当双语者在第一语言词汇判断任务中处理第二语言控制词时，这些区域也普遍被激活。这些区域作为任务/决策系统发挥作用，在解决反应冲突的认知控制中发挥作用。此外，前扣带皮层、左侧丘脑和左侧颞中回在IH处理过程中被激活，这表明语义冲突在刺激水平（即，在两种语言中具有不同含义的一个语标词）。(C)2017爱思唯尔公司All rights reserved.
Bilingual studies using alphabetic languages have shown parallel activation of two languages during word recognition. However, little is known about the brain mechanisms of language control during word comprehension with a logogram writing system. We manipulated the types of words (interlingual homographs (IH), cognates, and language-specific words) and the types of participants (Chinese (L1) Japanese (L2) bilinguals vs. Japanese monolinguals). Greater activation was found in the bilateral inferior frontal gyri, supplementary motor area, caudate nucleus and left fusiform gyrus, when the bilinguals processed IH, as compared to cognates. These areas were also commonly activated when the bilinguals processed L2 control words during an Ll lexical decision task. The areas function as the task/decision system that plays a role in cognitive control for resolving response conflict. Furthermore, the anterior cingulate cortex, left thalamus, and left middle temporal gyrus were activated during IH processing, suggesting resolution of the semantic conflict at the stimulus level (i.e., one logographic word having different meanings in the two languages). (C) 2017 Elsevier Inc. All rights reserved.