Effect of bilingualism on cognitive control in the Simon task: evidence from MEG
Effect of bilingualism on cognitive control in the Simon task: evidence from MEG
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DOI：
10.1016/j.neuroimage.2004.09.044
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发表时间：
2005-01-01
期刊：
影响因子：
5.7
通讯作者：
Pantev, C
中科院分区：
文献类型：
--
作者：
Bialystok, E;Craik, FIM;Pantev, C
本研究使用脑磁图（MEG），以确定神经相关的双语优势先前报告的行为措施，在冲突任务。双语粤语-英语，双语法语-英语，和单语英语的发言者，执行西蒙任务的MEG。一致性测试的反应时间比不一致性测试的反应时间快，广东话组比其他两组快，这两组之间没有差异。使用合成孔径磁强计（SAM）和偏最后平方（PLS）的MEG数据分析表明，相同的活动模式，涉及信号的变化，在左和内侧前额叶区，所有三组的特点。然而，激活区域和反应时间之间的相关性表明，两个双语组表现出更快的反应时间，更大的活动在上级和中颞，扣带，和上级和下额叶区域，主要是在左半球。单语者表现出更快的反应时间与激活中额区。这种解释是，两种语言系统的管理导致了额叶执行功能的系统性变化。(C)2004年爱思唯尔公司All rights reserved.
The present study used magneto-encephalography (MEG) to determine the neural correlates of the bilingual advantage previously reported for behavioral measures in conflict tasks. Bilingual Cantonese-English, bilingual French-English, and monolingual English speakers, performed the Simon task in the MEG. Reaction times were faster for congruent than for incongruent trials, and the Cantonese group was faster than the other two groups, which did not differ from each other. Analyses of the MEG data using synthetic aperture magnetometry (SAM) and partial last squares (PLS) showed that the same pattern of activity, involving signal changes in left and medial prefrontal areas, characterized all three groups. Correlations between activated regions and reaction times, however, showed that the two bilingual groups demonstrated faster reaction times with greater activity in superior and middle temporal, cingulate, and superior and inferior frontal regions, largely in the left hemisphere. The monolinguals demonstrated faster reaction times with activation in middle frontal regions. The interpretation is that the management of two language systems led to systematic changes in frontal executive functions. (C) 2004 Elsevier Inc. All rights reserved.