大脑干编码扩展高频发言及其行为相关性
Sajana Aryal1, Fan-Yin Cheng1,2, Srikanta K Mishra1
1Department of Speech, Language, and Hearing Sciences, University of Texas at Austin, Austin, Texas, United states.
Journal of neurophysiology
|December 22, 2025
概括
听觉大脑干以延长的高频率 (>8 kHz) 处理语音,影响语音感知. 较差的扩展高频听力与较弱的神经编码和减少语音识别相关.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 神经科学是一个神经科学.
背景情况:
- 扩展高频 (EHF;>8 kHz) 听力在语音处理中的作用仍然不清楚.
- 超声波灵敏度越来越多地与语音感知有关,但其直接参与现实世界的听力仍在争论中.
研究的目的:
- 为了研究脑干神经编码语音组件在EHF范围内.
- 检查EHF听觉灵敏度和神经/感知语音处理之间的关系.
主要方法:
- 语音刺激 (宽带,高通过>4kHz,>8kHz) 的响应 (EFRs) 后测量的信封.
- 在各种掩盖条件下的噪音中评估语音识别值 (宽带,低通 <2 kHz, <4 kHz, <8 kHz).
- 分析了47名正常听力成年人的数据.
主要成果:
- 听觉脑干在EHF范围内显示了对时间语音特征的相锁定 (f0,f0调制).
- 较差的EHF灵敏度与较弱的EFR f0幅度和提高的语音识别值有关.
- 超高频听力值预测了神经编码强度和语音在噪音中的表现,特别是在低通道掩盖的情况下.
结论:
- 在EHF范围内的语音信息弱编码关键线索,如语音基本频率 (f0) 和f0调制.
- 损坏的EHF听力与神经编码和感知的退化有关,即使对于主要在较低频率范围 (<8 kHz) 的语音.
相关概念视频
Higher Mental Functions of the Brain: Language
3.3K
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
3.3K
Perceiving Loudness, Pitch, and Location
881
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
881
Hearing
56.3K
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
56.3K


