Jedrzejczak W Wiktor, Kochanek Krzysztof, Pilka Edyta, Skarzynski Henryk
Institute of Physiology and Pathology of Hearing, ul. M. Mochnackiego 10, 02-042 Warsaw, Poland; World Hearing Center, ul. Mokra 17, Kajetany, 05-830 Nadarzyn, Poland.
Institute of Physiology and Pathology of Hearing, ul. M. Mochnackiego 10, 02-042 Warsaw, Poland; World Hearing Center, ul. Mokra 17, Kajetany, 05-830 Nadarzyn, Poland.
Int J Pediatr Otorhinolaryngol. 2016 Oct;89:67-71. doi: 10.1016/j.ijporl.2016.07.034. Epub 2016 Jul 28.
Spontaneous otoacoustic emissions (SOAEs) are one of the least studied types of otoacoustic emissions (OAEs). The purpose of this study was twofold: first, to determine the prevalence of SOAEs in schoolchildren, and second to test whether there was dependence between the presence or absence of SOAEs in a subject and the corresponding level of their transiently evoked OAEs (TEOAEs).
Measurements were made on a group of normally hearing children of age 7-13 years. A technique which detects synchronized SOAEs (SSOAEs) was used in which the response to repetitive clicks (12.5/s) was analyzed in the 60-80 ms time window following each click. The matching pursuit method was used to detect SSOAEs components above the noise in this window. For comparison, TEOAEs evoked by clicks (40/s) were obtained using the standard nonlinear protocol (20 ms time window).
The prevalence of SOAEs was 37%, and higher in females and right ears. There was an average of 2.3 SOAEs per emitting ear. TEOAE levels were higher for ears that had SOAEs and were lower for ears that did not have any SOAEs.
Although not all normal human have SOAEs, they appear to reflect an important aspect of cochlear function. Their presence is strongly related to elevated levels of TEOAEs which are routinely used in audiological tests.
自发性耳声发射（SOAE）是研究最少的耳声发射（OAE）类型之一。本研究有两个目的：第一，确定学龄儿童中SOAE的患病率；第二，测试个体中SOAE的有无与其瞬态诱发耳声发射（TEOAE）相应水平之间是否存在相关性。
对一组7至13岁听力正常的儿童进行测量。使用一种检测同步SOAE（SSOAE）的技术，其中在每次点击后的60 - 80毫秒时间窗口内分析对重复点击（12.5次/秒）的反应。使用匹配追踪方法在此窗口内检测高于噪声的SSOAE成分。为作比较，使用标准非线性协议（20毫秒时间窗口）获得由点击（40次/秒）诱发的TEOAE。
SOAE的患病率为37%，女性和右耳的患病率更高。每个有发射的耳朵平均有2.3个SOAE。有SOAE的耳朵的TEOAE水平较高，没有任何SOAE的耳朵的TEOAE水平较低。
虽然并非所有正常人都有SOAE，但它们似乎反映了耳蜗功能的一个重要方面。它们的存在与听力测试中常规使用的TEOAE水平升高密切相关。
