OTOACOUSTIC EMISSIONS FROM NORMAL-HEARING AND HEARING-IMPAIRED SUBJECTS - DISTORTION PRODUCT RESPONSES
OTOACOUSTIC EMISSIONS FROM NORMAL-HEARING AND HEARING-IMPAIRED SUBJECTS - DISTORTION PRODUCT RESPONSES
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DOI：
10.1121/1.406691
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发表时间：
1993-04-01
影响因子：
2.4
通讯作者：
JESTEADT, W
中科院分区：
文献类型：
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作者：
GORGA, MP;NEELY, ST;JESTEADT, W
畸变产物耳声发射（DPOAE）测量正常听力和听力受损的人类受试者。基于决策理论的分析被用来评估DPOAE测试性能。具体而言，相对工作特性（ROC）曲线构建和这些曲线下的面积被用来估计在何种程度上正常和受损的耳朵可以正确地识别这些措施。DPOAE振幅和DPOAE/噪声测量能够区分正常和受损受试者在4000，8000，并在较小程度上，在2000 Hz。然而，随着用于区分正常耳朵和听力受损耳朵的频率和听力标准的降低，这些措施区分各组的能力下降。在500 Hz时，无论正常听力的听力标准如何，表现都不比机会好。构建未命中（听力受损的耳朵被错误地识别为正常听力）和假警报（正常听力的耳朵被识别为听力受损）的累积分布，并用于评估一系列命中率的测试性能（即，正确识别听力受损耳朵的百分比）。根据所需的命中率，DPOAE振幅的标准值为-5至-12 dB SPL，DPOAE/噪声的标准值为8至15 dB，可准确区分听力正常的耳朵和两个频率（4000和8000 Hz）下阈值大于20 dB HL的耳朵。看来DPOAE测量可用于准确识别高频听力损失的存在，但至少对于本测量的条件而言，不能准确预测低频听力状态。
Distortion product otoacoustic emissions (DPOAE) were measured in normal-hearing and hearing-impaired human subjects. Analyses based on decision theory were used to evaluate DPOAE test performance. Specifically, relative operating characteristic (ROC) curves were constructed and the areas under these curves were used to estimate the extent to which normal and impaired ears could be correctly identified by these measures. DPOAE amplitude and DPOAE/noise measurements were able to distinguish between normal and impaired subjects at 4000, 8000, and, to a lesser extent, at 2000 Hz. The ability of these measures to distinguish between groups decreased, however, as frequency and audiometric criterion used to separate normal and hearing-impaired ears decreased. At 500 Hz, performance was no better than chance, regardless of the audiometric criterion for normal hearing. Cumulative distributions of misses (hearing-impaired ears incorrectly identified as normal hearing) and false alarms (normal-hearing ears identified as hearing impaired) were constructed and used to evaluate test performance for a range of hit rates (i.e., the percentage of correctly identified hearing-impaired ears). Depending on the desired hit rate, criterion values of - 5 to - 12 dB SPL for DPOAE amplitudes and 8 to 15 dB for DPOAE/noise accurately distinguished normal-hearing ears from those with thresholds greater than 20 dB HL for the two frequencies at which performance was best (4000 and 8000 Hz). It would appear that DPOAE measurements can be used to accurately identify the presence of high-frequency hearing loss, but are not accurate predictors of hearing status at lower frequencies, at least for the conditions of the present measurements.