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跨时间,空间,频率和年龄的语音理解:MEG-MVPA对试验间阶段一致性的分类

Mads Jensen¹, Rasha Hyder², Britta U Westner³

¹Center of Functionally Integrative Neuroscience (CFIN), Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Research Unit for Robophilosophy and Integrative Social Robotics, School of Culture and Society, Aarhus University, Aarhus, Denmark; Interacting Minds Centre, School of Culture and Society, Aarhus University, Aarhus, Denmark.

Neuropsychologia

|June 3, 2023

概括

在语音理解过程中的大脑活动在年轻人和老年人之间有所不同. 这些发现揭示了神经语言处理和大脑功能的与年龄相关的变化.

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:

语言对于人类的认知和整个生命的福祉至关重要.
虽然许多认知功能随着年龄的增长而下降,但语言处理中的变化被理解得更少.
研究与年龄相关的语音理解差异是必不可少的.

研究的目的:

为了检查语音理解神经机制如何随着健康的衰老而改变.
为了比较年轻人与老年人对语言刺激的大脑反应.
为了识别神经语言处理中的与年龄相关的变化.

主要方法:

磁脑电图 (MEG) 用于记录大脑活动.
健康的年轻人和老年人参与了被动的,无任务的倾听模式.
机器学习算法分析了不同语言层次 (词法,语义,形态语法) 的神经磁性大脑反应.

主要成果:

在年龄组之间观察到神经活动模式的显著差异.
在多个频段 (α,β,gamma) 中发现了差异.
对于所有测试的语言信息类型,与年龄相关的变化是显而易见的.

结论:

老化的大脑表现出对口语的神经处理的改变.
这些变化可能反映出一般健康衰老和补偿机制.
这些发现突出了大脑神经语言回路中与年龄相关的修改.

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