在正常听力中,语音信封追踪背景噪声的神经相关性
HyunJung An1, JeeWon Lee1,2, Myung-Whan Suh3
1Center for Intelligent and Interactive Robotics, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Frontiers in neuroscience
|November 2, 2023
概括
背景噪音影响语音理解,但神经反应因噪音类型而异,而不是强度. 即使听力正常,个体也会根据噪音条件调整听力策略,影响神经信封跟踪.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 认知心理学 认知心理学
背景情况:
- 每天的沟通经常发生在背景噪音中,影响语音识别.
- 噪音类型,强度和听力能力对语音理解的影响已知,但神经机制尚未完全理解.
- 在不同噪音条件下研究神经反应和注意力策略对于理解语音理解至关重要.
研究的目的:
- 在不同背景噪音条件下,研究正常听力个体的神经反应和注意力策略.
- 确定噪音类型和强度是否影响语音包裹的神经跟踪和行为语音理解.
- 探索个人语音感知能力如何调节神经对噪音的反应.
主要方法:
- 从20名听力正常的参与者中记录了脑电图 (EEG) 数据.
- 评估了语音包裹的神经跟踪和行为语音理解.
- 参与者听了一个没有噪音的故事,然后在不同的水平上以语音形状噪音 (SSN) 和故事噪音完成了语音理解任务.
主要成果:
- 根据噪音类型观察到神经包的相关性差异,但不是噪音水平.
- 噪音类型对信封跟踪的影响与个人语音感知得分有很大差异.
- 与得分较低的参与者相比,语音感知得分较高的参与者在噪音类型的信封跟踪中表现出更大的差异.
结论:
- 听力正常的个体表现出不同的神经反应和适应性倾听策略,受背景噪音类型的影响.
- 神经包跟踪对背景噪声类型敏感,表明不同的处理策略.
- 了解这些依赖噪音的神经机制是改善在具有挑战性的听觉环境中的语音沟通的关键.
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