双语性与成年时的thalamus中显著的结构和连接性改变有关
Behcet Ayyildiz1, Dila Sayman2, Sevilay Ayyildiz1,3
1Kocaeli University.
Journal of cognitive neuroscience
|January 27, 2025
概括
学习第二语言改变了大脑的连接,特别是在thalamic子领域. 双语可能提供对神经退行症的认知保护,这是由于大脑可塑性增强.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 语言学的语言学.
背景情况:
- 获取第二语言 (SLA) 诱导大脑的可塑性,但成人适应性变化仍然不清楚.
- 皮层下区域,如质体,在语言处理方面没有得到充分的研究.
- 以前的研究主要集中在皮层变化上,忽视了皮层下参与.
研究的目的:
- 为了研究第二语言学习后的thalamic子领域的功能连接性和体积变化.
- 为了比较单语言 (ML),早期双语 (EB) 和晚期双语 (LB) 个体之间的这些变化.
主要方法:
- 利用来自51名参与者的结构性MRI和功能性MRI (fMRI) 数据.
- 分析了单语言英语使用者,早期双语使用者 (10岁之前的英语/西班牙语) 和晚期双语使用者 (14岁之后的英语/西班牙语) 的数据.
- 在三个组中比较了功能连接和子场体积.
主要成果:
- 与早期和晚期的双语者相比,单语者在所有分析的胸膜子领域中显示出更高的功能连接性.
- 与单语者相比,双语组在左上核中表现出较小的体积.
- 这些发现突出了与双语相关的显著的胸膜变化.
结论:
- 获取第二语言显著影响着乳头的功能连接和子领域的数量.
- 与双语相关的观察到的大脑可塑性可能有助于认知储备.
- 这表明双语对神经退行性过程 (如痴呆症) 有潜在的保护作用.
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