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语言语音线索的神经编码不受认知衰退的影响,但随着听力障碍的增加,它会减少
Elena Bolt1,2, Nathalie Giroud3,4,5
1Computational Neuroscience of Speech and Hearing, Department of Computational Linguistics, University of Zurich, 8050, Zurich, Switzerland. elena.bolt.uzh@gmail.com.
Scientific reports
|August 17, 2024
概括
认知能力下降不会影响老年人的神经语音编码. 然而,听力损失特别损害了文字级语音特征编码,突出了进一步研究听力和认知影响的需要.
科学领域:
- 神经科学是一个神经科学.
- 听觉感知是一种听觉感知.
- 认知老龄化 认知老龄化
背景情况:
- 多变量时响应函数 (mTRF) 是一种分析神经对语音反应的强大技术.
- 了解认知能力下降和听力能力如何影响神经语音处理对于老年人群至关重要.
- 以前的研究还没有完全阐明认知状态和听觉对神经语音编码的独特影响.
研究的目的:
- 调查语音特征的神经表示与老年人早期认知衰退之间的关系.
- 评估听力能力对神经语音编码的影响.
- 检查声学,细分和语言语音特征是如何神经编码与认知和听觉有关的神经.
主要方法:
- 电脑电图 (EEG) 记录了老年人听有声书的声音.
- 多变量时间响应函数 (mTRF) 框架被用来建模语音刺激和神经反应之间的关系.
- 在不同语音特征模型 (声学,细分,语言) 中分析了编码精度,信号功率,峰值幅度和延迟.
主要成果:
- 认知能力下降或听力能力对一般声学和语言语言特征的神经编码没有显著的影响.
- 观察到听力能力和词级细分模型之间存在显著的相互作用.
- 听力障碍特别减少了词级分段语音特征的编码精度,但没有其他语音特征.
结论:
- 神经语音处理标记通常不受认知衰退或老年人听力损失的影响.
- 单词级分段语音特征的神经编码特别容易受到听力损失的影响,独立于认知能力下降.
- 对于研究神经语音编码,mTRF分析是有效的,对听力损失和认知功能有潜在的临床应用.
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