Jedrzejczak W Wiktor, Pilka Edyta, Pastucha Malgorzata, Kochanek Krzysztof, Skarzynski Henryk
Institute of Physiology and Pathology of Hearing, ul. Mochnackiego 10, 02-042 Warsaw, Poland.
World Hearing Center, ul. Mokra 17, Kajetany, 05-830 Warsaw, Poland.
Audiol Res. 2022 Jan 19;12(1):79-86. doi: 10.3390/audiolres12010008.
The aim of this study was to compare the reliability of the medial olivocochlear reflex (MOCR) between men and women. The strength of the MOCR was measured in terms of the suppression of transiently evoked otoacoustic emissions (TEOAEs) by contralateral acoustic stimulation (CAS). The difference between TEOAEs with and without CAS (white noise) was calculated as raw decibel TEOAE suppression as well as normalized TEOAE suppression expressed in percent. In each subject, sets of measurements were performed twice. Reliability was evaluated by calculating the intraclass correlation coefficient, the standard error of measurement, and the minimum detectable change (MDC). The study included 40 normally hearing subjects (20 men; 20 women). The estimates of MOCR for both genders were similar. Nevertheless, the reliability of the MOCR was poorer in men, with an MDC around twice that of women. This can be only partially attributed to slightly lower signal-to-noise ratios (SNRs) in men, since we used strict procedures calling for high SNRs (around 20 dB on average). Furthermore, even when we compared subgroups with similar SNRs, there was still lower MOCR reliability in men.
本研究的目的是比较男性和女性之间内侧橄榄耳蜗反射（MOCR）的可靠性。MOCR的强度通过对侧声刺激（CAS）对瞬态诱发耳声发射（TEOAEs）的抑制作用来衡量。有CAS（白噪声）和无CAS时TEOAEs之间的差异计算为原始分贝TEOAEs抑制以及以百分比表示的标准化TEOAEs抑制。在每个受试者中，测量组进行两次。通过计算组内相关系数、测量标准误差和最小可检测变化（MDC）来评估可靠性。该研究包括40名听力正常的受试者（20名男性；20名女性）。两性的MOCR估计值相似。然而，男性的MOCR可靠性较差，其MDC约为女性的两倍。这只能部分归因于男性略低的信噪比（SNR），因为我们采用了要求高SNR（平均约20 dB）的严格程序。此外，即使我们比较了具有相似SNR的亚组，男性的MOCR可靠性仍然较低。
