用精确的fMRI对多语言者和超多语言者的语言网络进行功能性表征
Saima Malik-Moraleda1,2,3, Olessia Jouravlev4, Maya Taliaferro1,2
1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States.
Cerebral cortex (New York, N.Y. : 1991)
|March 11, 2024
概括
多语者是多语言的人.
科学领域:
- 神经科学是一个神经科学.
- 语言学的语言学.
- 认知科学 认知科学
背景情况:
- 多语者,即说5种以上语言的人,为大脑语言处理提供了独特的见解.
- 了解大脑如何处理多种语言对于认知科学至关重要.
研究的目的:
- 为了研究大脑的语言网络如何响应不同程度的多语种语言的语言.
- 探索多语言语言处理的神经基础及其与语言计算的关系.
主要方法:
- 功能性磁共振成像 (fMRI) 用于研究34个多语言者,包括16个超多语言者 (10+语言).
- 语言网络的激活在对母语,非母语 (熟练程度不同) 和不熟悉的语言的反应中得到了检查.
主要成果:
- 所有语言条件都激活了语言网络;高水平与更强烈的反应相关,除了母语.
- 不熟悉的语言与已知的语言典型相关,引发了更强烈的神经反应.
- 与非多语种双语者相比,多语种人对母语处理的反应较弱.
结论:
- 语言网络的响应大小反映了语言计算的参与,例如词汇访问和语法处理.
- 这些发现增强了我们对多语言和神经语言表现的理解.
- 大脑的语言网络对语言任务的复杂性和参与度很敏感.
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