Factors that introduce intrasubject variability into ear-canal absorbance measurements.
Factors that introduce intrasubject variability into ear-canal absorbance measurements.
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DOI：
10.1097/aud.0b013e31829cfd64
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发表时间：
2013-07
期刊：
影响因子：
3.7
通讯作者：
Rosowski JJ
中科院分区：
文献类型：
--
作者：
Voss SE;Stenfelt S;Neely ST;Rosowski JJ
宽带导抗测量可用于分析通过耳朵的声学声流，并且还具有用于识别传导性听力损失以及传导性听力损失的原因的诊断潜力。为了解释单个测量结果，必须描述和量化重测数据的变异性。这里描述了耳道吸收性测量中可变性的贡献者。这些包括：与方法相关的假设和与耳内探头配合相关的问题以及潜在的声泄漏。有证据表明，耳道横截面积或测量位置的变化相对于人群内的变异性较小。数据表明，ER-10 C探头的Thévenin等效值的测定引入了最小的变异性，并且与泡沫耳塞本身无关。有人建议，在耦合的耳塞到耳道的声学泄漏导致实质性的变化，这个问题需要进一步的工作方面的潜在标准，以确定声学泄漏。此外，从文献中的重测数据进行了审查。
Wide band immittance measures can be useful in analyzing acoustic sound flow through the ear and also have diagnostic potential for the identification of conductive hearing loss as well as causes of conductive hearing loss. In order to interpret individual measurements, the variability in test-retest data must be described and quantified. Contributors to variability in ear-canal absorbance-based measurements are described here. These include: assumptions related to methodologies and issues related to the probe fit within the ear and potential acoustic leaks. Evidence suggests that variations in ear-canal cross sectional area or measurement location are small relative to variability within a population. Data are shown to suggest that the determination of the Thévenin equivalent of the ER-10C probe introduces minimal variability and is independent of the foam eartip itself. It is suggested that acoustic leaks in the coupling of the eartip to the ear canal lead to substantial variations and that this issue needs further work in terms of potential criteria to identify an acoustic leak. Additionally, test-retest data from the literature are reviewed.