中年人的基本频率的神经编码和离散音调口音的处理
Jacie R McHaney1, Zhe-Chen Guo1, G Nike Gnanateja2
1Northwestern University, Evanston, Illinois, USA.
The European journal of neuroscience
|October 30, 2025
概括
与年轻人相比,中年成年人表现出基本频率的神经编码的减少以及音调发音的处理不那么明显. 这表明,与年龄相关的听觉处理变化会影响语音理解.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 精神声学是一种精神声学.
背景情况:
- 音调是言语中的一个关键的表情元素,它传达意图和意义.
- 基本频率 (音调的声学基础) 的神经编码可以随着年龄的增长而下降,即使没有听力损失.
- 与年龄相关的听觉变化可能会影响语言中超细分特征的处理.
研究的目的:
- 系统地调查基本频率神经编码中的与年龄相关的差异.
- 为了检查中年和年轻成年听众之间,音调口音的神经处理如何不同.
- 将神经编码缺陷与更高层次的体处理挑战联系起来.
主要方法:
- 中年和年轻人的基本频率神经编码的比较,使用语法和自然语言.
- 通过神经网络模型,通过神经网络模型分析自然主义语音中音调口音的神经处理.
- 在音高口音分类中对分类不确定性的评估.
主要成果:
- 与年轻成年人相比,中年成年人表现出基本频率的神经编码对于语法和自然主义刺激的减少.
- 中年成年人表现出对音调口音的神经处理不那么精确,这表明分类不确定性增加.
- 基本频率的神经编码的减少与高音口音的更高的分类不确定性相关.
结论:
- 中年与基本频率的神经编码的减少和prosody的皮质处理的较少专业化有关.
- 音高的早期听觉处理中的缺陷可能会导致理解言语的超细分特征的挑战.
- 这些发现突出了与年龄相关的听觉皮层功能变化,影响了语音表达式理解.
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