Racial and gender effects on pure-tone thresholds and distortion-product otoacoustic emissions (DPOAEs) in normal-hearing young adults
Racial and gender effects on pure-tone thresholds and distortion-product otoacoustic emissions (DPOAEs) in normal-hearing young adults
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DOI：
10.1080/14992020701355074
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发表时间：
2007-08-01
影响因子：
2.7
通讯作者：
Cotvart, Kristin
中科院分区：
文献类型：
--
作者：
Dreisbach, Laura E.;Kramer, Steven J.;Cotvart, Kristin
这项研究考察了种族和性别对同一受试者的行为阈值和失真产物耳声发射 (DPOAE) 的影响。对 60 名听力正常的年轻成年受试者（20 名白人、20 名亚洲人、20 名非洲裔美国人，每组 10 名女性和 10 名男性）进行了纯音行为阈值和 DPOAE 测量。使用 Bekesy 跟踪测量从 1000 到 16 000 Hz 的行为阈值。对于每个受试者，DPOAE 频率扫描的主要刺激水平为 L-1/L-2=60/45 dB SPL，f(2)/f(1) 为 1.2，离散 f(2) 频率介于 2000 至 12000 Hz 之间。在 14000 和 16000 Hz 频率下发现行为阈值存在显着的种族和性别差异，其中非洲裔美国人和女性的听力敏感度最高。根据目前的结果，鉴于不同种族群体之间没有发现显着差异，预计 DPOAE 频率扫描会出现类似的结果。为了进一步确定种族和性别对听觉测量的影响，未来的研究应该包括更多的受试者、身体尺寸和中耳反射率的测量，并检查发射发生器。
This study examined racial and gender effects on behavioral thresholds and distortion-product otoacoustic emissions (DPOAEs) in the same subjects. Pure-tone behavioral thresholds and DPOAEs were measured in 60 young normal-hearing adult subjects (20 Caucasian, 20 Asian, 20 African-American, with ten females and ten males in each group). Behavioral thresholds were measured from 1000 through 16 000 Hz using Bekesy tracking. A DPOAE frequency sweep was measured with primary stimulus levels of L-1/L-2=60/45 dB SPL, and an f(2)/f(1) of 1.2 at discrete f(2) frequencies between 2000 through 12000 Hz for each subject. Significant racial and gender differences in behavioral thresholds were found at 14000 and 16000 Hz, with the African Americans and females having the best hearing sensitivity. Based on the current results, similar findings for DPOAE frequency sweeps can be expected amongst different racial groups given that no significant differences were identified between the groups. To further define the effects of race and gender on auditory measures, future studies should include larger numbers of subjects, measurement of body size and middle ear reflectance, and examine emission generators.