Conijn E A, Brocaar M P, van Zanten G A
Sophia Children's Hospital Rotterdam, Erasmus University, Department of Otorhinolaryngology, The Netherlands.
Audiology. 1993;32(1):1-11. doi: 10.3109/00206099309072923.
The frequency specificity of the ABR threshold evoked by a 1000-Hz filtered click was determined in subjects with sloping cochlear hearing losses, both high- and low-frequency in character. The results show that the ABR threshold evoked by this stimulus is low-frequency specific. The standard error in estimating the 1000-Hz pure-tone threshold (PTT) is 10.4 dB, which equals that for estimating the 3000-Hz PTT from the routinely used click-evoked ABR threshold. The ABR threshold evoked by a 1000-Hz filtered click can therefore be regarded as an accurate tool to predict the pure-tone hearing loss at 1000-Hz. In comparison with the ABR threshold evoked by a click masked with 1590-Hz high-pass noise, the ABR threshold evoked by a 1000-Hz filtered click has a larger dynamic range, yields a larger number of useful responses and is less time consuming. For clinical low-frequency-specific ABR threshold assessment, the 1000-Hz filtered click is therefore preeminently useful.
在患有高频和低频特征的斜坡型耳蜗性听力损失的受试者中，测定了由1000赫兹滤波短声诱发的听性脑干反应（ABR）阈值的频率特异性。结果表明，该刺激诱发的ABR阈值具有低频特异性。估计1000赫兹纯音阈值（PTT）的标准误差为10.4分贝，这与根据常规使用的短声诱发ABR阈值估计3000赫兹PTT的标准误差相等。因此，由1000赫兹滤波短声诱发的ABR阈值可被视为预测1000赫兹纯音听力损失的准确工具。与用1590赫兹高通噪声掩蔽的短声诱发的ABR阈值相比，由1000赫兹滤波短声诱发的ABR阈值具有更大的动态范围，产生更多有用的反应，并且耗时更少。因此，对于临床低频特异性ABR阈值评估，1000赫兹滤波短声非常有用。
