Faculty of Health Sciences, Audiology Department, Ankara Yildirim Beyazit University, Ankara, Turkey.
Brain Behav. 2024 Sep;14(9):e370011. doi: 10.1002/brb3.70011.
The objective of this study was to determine the gender-specific normative values of masking level difference (MLD) in healthy young adults for two different measurement conditions.
One hundred young adults between the ages of 19 and 25 were included. Tympanometry, pure tone audiometry, and MLD were performed. In the first MLD measurement condition, the threshold level where the signal was out of phase and the noise was in phase (SπNo) was subtracted from the threshold level where the signal and noise were in phase (SoNo). In the second MLD measurement condition, the threshold level where the signal was in phase and the noise was out of phase (SoNπ) was subtracted from the threshold level where the signal and noise were in phase (SoNo). The mean test scores were obtained in decibels. Comparisons were made in terms of gender and conditions.
The mean MLD for SoNo-SπNo condition was 10.3 ± 1.99 dB. For SoNo-SoNπ condition, the mean MLD was 6.72 ± 2.38 dB. A significant difference was determined between the MLD under two different measurement conditions (p <.05). There was no significant difference in terms of gender (p >.05).
Mean normative values of MLD test scores in gender-specific healthy young adults for two different measurement conditions are presented.
本研究旨在确定两种不同测量条件下健康年轻成年人的掩蔽水平差（MLD）的性别特异性正常值。
共纳入 100 名 19 至 25 岁的年轻人。进行鼓室压测量、纯音听力测试和 MLD 测试。在第一种 MLD 测量条件下，从信号相位相反而噪声相位相同（SπNo）的阈值水平减去信号和噪声相位相同（SoNo）的阈值水平。在第二种 MLD 测量条件下，从信号相位相同而噪声相位相反（SoNπ）的阈值水平减去信号和噪声相位相同（SoNo）的阈值水平。测试分数以分贝为单位取平均值。比较了性别和条件。
SoNo-SπNo 条件下的平均 MLD 为 10.3±1.99dB。SoNo-SoNπ 条件下的平均 MLD 为 6.72±2.38dB。两种不同测量条件下的 MLD 存在显著差异（p<0.05）。性别之间无显著差异（p>0.05）。
本文呈现了两种不同测量条件下健康年轻成年人的 MLD 测试分数的性别特异性平均正常值。
