Cognitive control of language production in bilinguals involves a partly independent process within the domain-general cognitive control network: Evidence from task-switching and electrical brain activity

详细信息	查看全文 | 推荐本文 |

• 作者：David A. Magezi^a ; ¹ ; Asaid Khateb^b ; ^c ; Michael Mouthon^a ; ^b ; Lucas Spierer^a ; Jean-Marie Annoni^a ; ^b ; ^d ; ^{jean-marie.annoni@unifr.ch}
• 关键词：Event-related potentials (ERPs) ; Source localisation ; Task selection ; Overt naming ; First language ; Second language
• 刊名：Brain and Language
• 出版年：2012
• 期刊代码：121_0093934x
• 类别：cp
• 出版时间：July, 2012
• 卷：122
• 期：1
• 页码：55-63
• 文件大小：836 K

摘要

In highly proficient, early bilinguals, behavioural studies of the cost of switching language or task suggest qualitative differences between language control and domain-general cognitive control. By contrast, several neuroimaging studies have shown an overlap of the brain areas involved in language control and domain-general cognitive control. The current study measured both behavioural responses and event-related potentials (ERPs) from bilinguals who performed picture naming in single- or mixed-language contexts, as well as an alphanumeric categorisation task in single- or mixed-task context. Analysis of switch costs during the mixed-context conditions showed qualitative differences between language control and domain-general cognitive control. A 2 脳 2 ANOVA of the ERPs, with domain (linguistic, alphanumeric) and context (single, mixed) as within-participant factors, revealed a significant interaction, which also suggests a partly independent language-control mechanism. Source estimations revealed the neural basis of this mechanism to be in bilateral frontal-temporal areas.