Proc Natl Acad Sci U S A:扩展高频听力能够增强噪音中言语的感知

2019-11-21 AlexYang MedSci原创

年轻健康的成年人能够最多听到20kHz的声音。然而,听力损失诊断的方法-临床听力测试最多只能测到8kHz。有证据表明更高频率时(EHFs;8到20kHz)具有显著的信息,且能够影响语言清晰度,而是否该信息用于具有挑战性的条件仍旧未知。在噪音条件下对言语理解困难是最常见的听力问题,通常是年龄相关听力损失的征兆。最近,有研究人员在Digits-in-noise(DIN)测试中使用标准和EHF听力测定、

年轻健康的成年人能够最多听到20kHz的声音。然而,听力损失诊断的方法-临床听力测试最多只能测到8kHz。有证据表明更高频率时(EHFs;8到20kHz)具有显著的信息,且能够影响语言清晰度,而是否该信息用于具有挑战性的条件仍旧未知。

在噪音条件下对言语理解困难是最常见的听力问题,通常是年龄相关听力损失的征兆。最近,有研究人员在Digits-in-noise(DIN)测试中使用标准和EHF听力测定、自我报告和连续更高截止频率滤波器(2到8kHz)调查了更高频率下噪音中语音感知的贡献因子。研究人员发现了3个惊奇的结果,首先,116名正常听力中的74名,即大多数更年轻的成年人在大于8kHz时具有某种程度听力损失。早期的EHF听力损失可能较容易测量,从而进行预防警告来保护听力。其次,EHF听力损失与自我报告的噪音中听力困难相关。最后,尽管使用最宽滤波噪声(≤8kHz),DIN听力阈值仍旧明显比其他方法更好(P<0.0001)。因此,高于8kHz的声音能量对噪音中言语感知是有贡献的。具有正常听力的人们频繁报告在挑战性环境下具有听力困难。

最后,研究人员指出,他们的结果表明了噪音中听力困难的其中一个贡献因子是EHF听力损失。

原始出处:

Motlagh Zadeh L, Silbert NH, Sternasty K et al. Extended high-frequency hearing enhances speech perception in noise. Proc Natl Acad Sci U S A. 19 Nov 2019

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    2020-10-23 liye789132251
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    2020-07-18 lishizhe
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    2020-09-01 qidongfanjian
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    2019-11-23 ysjykql
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    2019-11-23 sunylz
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    2020-02-02 linlin2312

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