在语音感知过程中,基于形式和意义的可预测性的神经相关性
Carine Signoret1, Josefine Andin1, Örjan Dahlström1
1Department of Behavioural Sciences and Learning, Linköping University, Sweden.
Brain and cognition
|November 25, 2025
概括
提前了解语音内容可以提高听觉处理. 这项研究揭示了基于形式和基于意义的可预测性在语音感知中的不同大脑区域,有助于听觉理解.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 听觉神经科学 听觉神经科学
背景情况:
- 退化的语音感知是具有挑战性的.
- 预先了解语音内容,即"弹出效应",可以提高理解力.
- 了解语音处理中可预测性的神经基础至关重要.
研究的目的:
- 调查语音感知中的"弹出效应"的神经相关物.
- 区分大脑对形式层次 (词) 和意义层次 (句子) 预测性的反应.
- 探索这些可预测性类型如何影响正常听力听众的语音感知.
主要方法:
- 使用了功能磁共振成像 (fMRI).
- 参与者听到噪声编码的语音,可理解度不同.
- 提供视觉文本线索 (匹配或不匹配) 来操纵可预测性.
主要成果:
- 基于形式的可预测性激活了听觉皮层 (上环/角).
- 基于意义的可预测性涉及更高的语言区域 (例如,左下额头).
- 这两种可预测性类型都通过上下和整合机制增强了语音感知.
结论:
- 形式和基于意义的可预测性利用不同的神经通路.
- 上向下处理和听觉输入的整合是增强语音感知的关键.
- 调查结果提供了对听觉处理和听力障碍的潜在干预措施的见解.
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