Speaking words in two languages with one brain, Neural overlap and dissociation

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	Speaking words in two languages with one brain, Neural overlap and dissociation
	Liu HY; Hu ZG; Guo TM; Taomei Guo
摘要	The present study investigated the neural overlap and dissociation underlying overt word production in the first language (L1) and second language (L2). Twenty-four Chinese–English bilinguals named pictures in either L1 or L2 while being scanned with functional magnetic resonance imaging (fMRI). When comparing picture naming in L2 to naming in L1, increased activity in the left inferior frontal gyrus, bilateral supplementary motor areas (SMA), left precentral gyrus, left lingual gyrus, left cuneus, bilateral putamen, bilateral globus pallidus, bilateral caudate and bilateral cerebellum were observed. This suggested that word production in L2 is less automatic and needs to recruit more neural resources for lexical retrieval, articulatory processing and cognitive control than in L1. In contrast, picture naming in L1 relative to picture naming in L2 revealed increased activity in the right putamen and right globus pallidus probably due to different phonological features between Chinese and English. In addition, the conjunction analysis, for the first time, revealed the common neural correlates underlying picture naming in L1 and L2.
关键词	Bilingualism Word production Neural basis fMRI
学科领域	心理语言学
	2010
语种	英语
发表期刊	BRAIN RESEARCH
ISSN	0006-8993
卷号	1316 页码:75-82
收录类别	SCI
资助项目	二室翁旭初课题组
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/6967
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Taomei Guo
推荐引用方式 GB/T 7714	Liu HY,Hu ZG,Guo TM,et al. Speaking words in two languages with one brain, Neural overlap and dissociation[J]. BRAIN RESEARCH,2010,1316:75-82.
APA	Liu HY,Hu ZG,Guo TM,&Taomei Guo.(2010).Speaking words in two languages with one brain, Neural overlap and dissociation.BRAIN RESEARCH,1316,75-82.
MLA	Liu HY,et al."Speaking words in two languages with one brain, Neural overlap and dissociation".BRAIN RESEARCH 1316(2010):75-82.