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语音生产中的双语语言控制的跟踪组件:使用功能定位器的fMRI研究
Agata Wolna1, Jakub Szewczyk1,2,3, Michele Diaz4
1Institute of Psychology, Jagiellonian University, Kraków, Poland.
Neurobiology of language (Cambridge, Mass.)
|June 4, 2024
概括
双语者经历母语检索困难,L2后效应,在使用第二语言后. 这种效应涉及到一般的认知控制,而不是语言特定的大脑区域,这表明双语的执行功能涉及到更广泛的执行功能.
科学领域:
- 认知神经科学 认知神经科学
- 心理语言学 心理语言学
- 神经成像是一种神经成像.
背景情况:
- 双语人士有时在使用第二种语言 (L2) 后,难以获得母语 (L1) 中的单词.
- 这种被称为L2后效应的现象,为双语大脑如何管理多种语言提供了洞察力.
- 了解L2后效应的神经基础可以阐明双语语言控制机制.
研究的目的:
- 要确定双语语言控制是否依赖于一般的认知机制或语言特定的机制.
- 确定负责L2后效应的确切神经机制.
- 为了研究L2后效应和已建立的大脑网络之间的神经重叠.
主要方法:
- 使用了一种精确的功能磁共振成像 (fMRI) 方法.
- 使用功能定位器来绘制大脑活动的地图.
- 检查的重叠与语言网络,多重需求网络,以及干扰解决,词汇检索和表达的网络.
主要成果:
- L2后效应与域一般认知资源的参与度增加有关.
- 没有证据支持语言特异的神经机制参与L2后效应.
- 这项研究没有发现对L2后效应的支持,这种后效应源于词汇访问,表达或干扰解决困难.
结论:
- 这种L2后效应来自于域一般认知控制的参与,而不是语言特定的过程.
- 这些发现挑战了以前的解释,将L2后效应与特定的语言处理困难联系起来.
- 建议L2后效应反映了非语言任务方案层面的干扰或在L1语音生产后L2使用期间增强的认知控制.
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