Noise-dose estimated with and without pre-cochlear amplification
Noise-dose estimated with and without pre-cochlear amplification
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DOI：
10.1121/1.5132546
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发表时间：
2019-11-01
影响因子：
2.4
通讯作者：
Le Prell, Colleen G.
中科院分区：
文献类型：
--
作者：
Grinn, Sarah K.;Le Prell, Colleen G.
来自自然耳道共振的放大已经被证明是个体之间高度可变的。然而，总耳蜗前放大的个体差异（即，联合外耳和中耳机制）与噪声性听力损失（NIHL）的相关性研究仍然不足。众所周知，更多的噪声意味着更多的听力损失风险，但目前的风险模型没有考虑单独可变的耳蜗前放大，也称为开放耳的传递函数（TFOE）。本研究主要记录了个体TFOE的变异性，并探讨了可用于估计TFOE的简单代理指标的可行性和准确性。参与者的TFOE值被用来估计他们在假设的自由场暴露中的NIHL风险。48名成年受试者（42名女性，6名男性，年龄21-60岁）符合2名健康耳廓和耳道（
Amplification from natural ear canal resonance has been documented as highly variable across individuals. However, individual variability in total pre-cochlear amplification (i.e., combined external and middle ear mechanisms) remains understudied in relevance to noise-induced hearing loss (NIHL). It is well-known that more noise means more risk of hearing loss, yet the current risk-models do not consider individually variable pre-cochlear amplification, also referred to as the transfer function of the open ear (TFOE). The present study principally documented individual TFOE variability and explored the feasibility and accuracy of simple proxy metrics, which could be used to estimate TFOE. Participants' TFOE values were used to estimate their NIHL risk in hypothetical free-field exposures. Forty-eight adult participants (42 female, 6 male, ages 21-60 years) met inclusion criteria of 2 healthy pinnae and ear canals (