相关实验视频

Updated: Jun 3, 2025

Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea

Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea

Published on: May 10, 2019

在老年听者中解读受损的语音噪音可理解性:耳突触的作用

Markus Garrett¹, Viacheslav Vasilkov², Manfred Mauermann¹

¹Medizinische Physik and Cluster of Excellence "Hearing4all", Department of Medical Physics and Acoustics, Carl von Ossietzky University of Oldenburg, Oldenburg 26129, Germany.

|January 9, 2025

概括

与年龄相关的耳突触 (CS),是一种听力损伤形式,会损害噪音中的语音理解. 这项研究表明,CS显著影响老年人的文字识别,除了听力敏感性降低.

科学领域:

听觉神经科学听觉神经科学
老年学是一门学科.
语音感知语音感知

背景情况:

语音可理解性随着年龄和神经感官听力损失 (SNHL) 的降低而下降.
耳突触病 (CS) 是对听觉神经突触的损伤,是SNHL的潜在贡献者,但其作用尚不清楚.
与年龄相关的听力损失涉及多个因素,包括毛细胞损伤和CS,使个人贡献的评估变得复杂.

研究的目的:

调查耳突触 (CS) 对老年听众语音理解缺陷的具体贡献.
为了验证一个信封后响应 (EFR) 标志物用于诊断CS使用Budgerigar模型,随后在人类.
区分听觉敏感性和CS对老年人文字识别的影响.

主要方法:

在Budgerigar模型中验证了耳突触 (CS) 的信封追随响应 (EFR) 标志物.
在人类参与者身上应用了EFR标记,专注于特定频率区域内的语音材料.
在年轻正常听力成年人和两组老年人 (正常听力和受损听力) 之间比较了语音接收值和EFR反应.

主要成果:

与年轻对照组相比,老年成年人群的EFR反应减少,这表明与年龄相关的CS.
这两组老年人表现出语音接收值受损,这表明他们难以理解语言.
该研究发现,与年龄相关的CS显著影响超值时包编码,导致噪音中的语音编码缺陷.

结论:

与年龄相关的耳突触 (CS) 是老年人语音理解能力下降的一个重要因素.
在噪音中观察到的语音缺陷不能仅仅归因于听力敏感度下降.
经过验证的EFR标记器为评估CS及其对老年人群听觉功能的影响提供了一个工具.

关键词:

耳突触 (cochlear synaptopathy) 是一种发生在耳中的突触.封面后的响应响应外部毛发细胞损伤.接收门是接收门.感应神经神经听力损失演讲演讲演讲演讲语音的可理解性语音的可理解性语音在噪音中的语言.

更多相关视频

Immunolabeling and Counting Ribbon Synapses in Young Adult and Aged Gerbil Cochleae

Immunolabeling and Counting Ribbon Synapses in Young Adult and Aged Gerbil Cochleae

Published on: April 21, 2022

Cochlear Surface Preparation in the Adult Mouse

Cochlear Surface Preparation in the Adult Mouse

Published on: November 6, 2019

相关概念视频

The Cochlea

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

Hearing

Hearing

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.

Auditory Pathway

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...