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大脑中的双语语言控制:结构和有效的功能性大脑连接的证据

Gongting Wang^1,2, Lily Tao¹

¹East China Normal University.

Journal of cognitive neuroscience

|February 15, 2024

概括

双语语言控制涉及到大脑的变化. 这项研究将大脑连接 (结构和功能) 与双语者语言控制表现联系起来,揭示了非线性关系.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
心理语言学心理语言学

背景情况:

双语诱导大脑结构和功能上的变化.
以前的研究并没有直接将双语语言控制期间的结构和功能大脑连接联系起来.

研究的目的:

调查双语语言控制期间结构和功能大脑连接之间的关系.
为了确定连接性是否与语言控制中的行为表现有关.

主要方法:

利用行为,功能和扩散成像技术.
分析了包括左背侧额前皮层 (dlPFC) 和背前带状皮层 (dACC) /前SMA.在内的区域的大脑激活.
使用dlPFC,dACC/pre-SMA和左尾状核 (CN) 等感兴趣区域 (ROI) 建模有效的连接.

主要成果:

在语言控制期间观察到dlPFC,CN,下顶叶,前,dACC/SMA前的显著大脑活化.
确定了一个特定的有效连接路径:dACC/pre-SMA到左CN,在左CN和dlPFC之间具有双向连接.
发现有效连接和结构连接之间存在非线性关系,dACC/pre-SMA和dlPFC之间的纤维密度对dlPFC和CN之间的连接产生了积极影响.

结论:

提供了双语语言控制中的功能有效连接模式的证据.
有助于理解第二语言学习者大脑中的结构连接.
突出了功能连接,结构连接和双语者的行为表现之间的非线性关联.

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