在听觉脑干中扩展高频听力和超值神经同步
Jithin Raj Balan1,2, Srikanta K Mishra1, Hansapani Rodrigo3
1Department of Speech, Language and Hearing Sciences, The University of Texas at Austin, Austin, Texas 78712, USA.
The Journal of the Acoustical Society of America
|March 4, 2025
概括
在扩展高频率 (EHF) 中听力值升高不会影响正常听力个体在较低频率的听觉脑干反应. 这表明,EHF听力损失不会扰乱标准频率的听觉大脑干中的神经处理.
科学领域:
- 听力学 听力学是指听力学.
- 神经科学是一个神经科学.
- 听力科学 听力科学
背景情况:
- 在扩展高频 (EHF) (>8 kHz) 中,听力值升高与语音在噪音中的识别能力降低有关,即使使用正常的音频图.
- 对于EHF听力损失对听觉脑干神经处理的影响尚不清楚.
研究的目的:
- 为了确定是否升高的EHF值会影响正常音频的个体在较低频率 (<8kHz) 的神经处理.
- 研究EHF听觉灵敏度和听觉脑干响应 (ABR) 度量之间的关系.
主要方法:
- 在45名临床听力正常的参与者中记录了听觉脑干反应 (ABR).
- 该协议侧重于在超值水平 (80 dB nHL) 上获得ABR的强波I.
- 根据年龄,性别和标准听力值 (0.25-8 kHz) 调整的统计分析.
主要成果:
- 在任何测试速率下,在EHF纯色调平均值和ABR指标 (波I,V幅度,I-V延迟,III,V延迟) 之间没有发现显著的关联.
- 在具体的ABR测量中观察到显著的性别影响,这取决于刺激速率.
- 升高的EHF听力值并没有显著改变大脑干处理频率低于8kHz的频率.
结论:
- 该研究得出的结论是,高EHF听力值不会显著影响听觉大脑干中神经处理较低频率.
- 研究结果表明,尽管在正常听力图的个体中存在EHF听力损失,但标准声度频率的听觉脑干功能仍然存在.
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