AoA-L2 and Usage-L2 modulate the functional neuroplasticity of the subcortex

IF 2.1 2区心理学 Q1 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY

Brain and Language Pub Date : 2023-10-01 DOI:10.1016/j.bandl.2023.105323

Xiaojin Liu , Zhenni Gao , Wen Liu , Xintong He , Naiyi Wang

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引用次数: 0

Abstract

Previous studies revealed structural differences in subcortical regions between monolinguals and bilinguals; however, whether the functional neuroplasticity of the subcortex is modulated by different bilingual experiences remains unclear. Here, we examined the effect of age of second language acquisition (AoA-L2) and usage of L2 (Usage-L2) on subcorto-cortical and intra-subcortical functional connectivity (FC) in bilinguals by using resting-state fMRI data. The relations between brain measurements and bilingual experiences were revealed by using multiple regression analysis. We found that increased AoA-L2 was mainly related to decreased subcortical FC involving the anterior thalamus, basal ganglia, and hippocampus. Increased Usage-L2 at home was mainly associated with decreased subcortical FC of the amygdala, globus pallidus, hippocampus, and nucleus accumbens. The FC of these subcortical regions displayed a positive relation with Usage-L2 in social settings. These findings reveal that bilingual experiences modulate the functional neuroplasticity of the subcortex in different ways.

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AoA-L2和Usage-L2调节皮质下的功能性神经可塑性。

先前的研究揭示了单语者和双语者皮层下区域的结构差异；然而，皮层下的功能性神经可塑性是否受到不同双语经历的调节仍不清楚。在这里，我们通过静息态fMRI数据研究了第二语言习得年龄（AoA-L2）和L2使用（usage-L2）对双语者大脑皮层下和皮层内功能连接（FC）的影响。通过多元回归分析揭示了大脑测量与双语体验之间的关系。我们发现，AoA-L2的增加主要与涉及前丘脑、基底节和海马的皮质下FC的减少有关。在家中使用-L2的增加主要与杏仁核、苍白球、海马体和伏隔核的皮质下FC减少有关。这些皮层下区域的FC与社交环境中的Usage-L2呈正相关。这些发现表明，双语经历以不同的方式调节皮层下的功能性神经可塑性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Brain and Language 医学-神经科学

CiteScore

4.50

自引率

8.00%

发文量

审稿时长

20.5 weeks

期刊介绍： An interdisciplinary journal, Brain and Language publishes articles that elucidate the complex relationships among language, brain, and behavior. The journal covers the large variety of modern techniques in cognitive neuroscience, including functional and structural brain imaging, electrophysiology, cellular and molecular neurobiology, genetics, lesion-based approaches, and computational modeling. All articles must relate to human language and be relevant to the understanding of its neurobiological and neurocognitive bases. Published articles in the journal are expected to have significant theoretical novelty and/or practical implications, and use perspectives and methods from psychology, linguistics, and neuroscience along with brain data and brain measures.