Racial Heritage/Melanin and Otoacoustic Emission Measures of Cochlear Function

Asia Pacific journal of speech, language, and hearing Pub Date : 2009-03-01 DOI:10.1179/jslh.2009.12.1.1

C. Driscoll, J. Kei, S. Arnold, Dominic Doherty, J. Krajewski, G. Mcdonald, Ellen McKeering, Mikaela Tyrrell, B. McPherson

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引用次数: 1

Abstract

Abstract Researchers have hypothesized that races with high levels of melanin may possess superior cochlear robusticity. This study aimed to examine the relationship between cochlear function and racial heritage, by determining if a significant difference existed in otoacoustic emission (OAE) characteristics and hearing sensitivity between differing groups. OAEs, puretone thresholds, and tympanometric measures were obtained from 18 Caucasians and 19 Africans. Seven albino Caucasians, a group with defective melanin production/distribution, were included for comparative purposes. An analysis of variance with repeated measures was applied to the data, to establish the group interactions of significance. Africans were found to display significantly stronger OAEs than Caucasians. However, the OAEs of albino Caucasians did not significantly differ from those of the other groups. Results did show significantly poorer hearing thresholds for the albino Caucasian group than for the Caucasians. These findings suggest that the robust cochlear function observed in Africans could be due to factors other than enhanced melanin levels.

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种族遗传/黑色素和耳蜗功能的耳声发射测量

研究人员假设黑色素水平高的种族可能具有更强的耳蜗健全性。本研究旨在通过确定不同人群在耳声发射(OAE)特征和听力敏感性方面是否存在显著差异，来研究耳蜗功能与种族遗传之间的关系。从18名白种人和19名非洲人中获得了oae、纯酮阈值和鼓室测量值。7名白化高加索人，一组有缺陷的黑色素生产/分配，包括比较目的。对数据进行重复测量的方差分析，以确定组间相互作用的显著性。研究发现，非洲人的oae明显强于白种人。然而，白化高加索人的oae与其他组没有显著差异。结果确实显示白化白种人的听力阈值明显低于白种人。这些发现表明，在非洲人身上观察到的强大的耳蜗功能可能是由于黑色素水平提高以外的因素。

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Asia Pacific journal of speech, language, and hearing

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