Second language lexical development and cognitive control: A longitudinal fMRI study
Second language lexical development and cognitive control: A longitudinal fMRI study
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DOI：
10.1016/j.bandl.2015.03.010
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发表时间：
2015-05-01
影响因子：
2.5
通讯作者：
Li, Ping
中科院分区：
文献类型：
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作者：
Grant, Angela M.;Fang, Shin-Yi;Li, Ping
在本文中，我们报告了一项纵向功能磁共振成像（fMRI）研究，该研究测试了对第二语言（L2）习得中认知控制时间过程的对比预测。在一学年的时间里，我们对二语学习者词汇加工的神经关联进行了两次研究。具体来说，在扫描仪中，参与者被要求判断明确的第一语言和第二语言单词以及语际同音异义词的语言隶属度。我们的ROI和连通性分析表明，随着第二语言接触的增加，控制区域（如前扣带皮层）的总体激活减少，而与语义处理区域（如中颞回）的连通性增加。这些结果表明认知控制在二语习得初期更为重要，这对理解二语词汇加工的发育和神经认知模式具有重要意义。(C) 2015爱思唯尔公司版权所有。
In this paper we report a longitudinal functional magnetic resonance imaging (fMRI) study that tested contrasting predictions about the time course of cognitive control in second language (L2) acquisition. We examined the neural correlates of lexical processing in L2 learners twice over the course of one academic year. Specifically, while in the scanner, participants were asked to judge the language membership of unambiguous first and second language words, as well as interlingual homographs. Our ROI and connectivity analyses reveal that with increased exposure to the L2, overall activation in control areas such as the anterior cingulate cortex decrease while connectivity with semantic processing regions such as the middle temporal gyrus increase. These results suggest that cognitive control is more important initially in L2 acquisition, and have significant implications for understanding developmental and neurocognitive models of second language lexical processing. (C) 2015 Elsevier Inc. All rights reserved.