Dieroff H G, Meissner W
HNO-Klinik des Bereiches Medizin, Friedrich-Schiller-Universität Jena.
HNO. 1989 Nov;37(11):472-6.
Concluding from audiometrical practice using hearing aids unilaterally we could find an inactivity of the unused contralateral ear. We have investigated if it is possible to measure this inactivity by common psychoacoustic methods. We tested 92 persons with advanced combined hearing loss. We had to state that the inactivity is not measurable by mean tone hearing loss according to HAIC (0.5, 1 and 2 kHz), the percentage hearing loss according to Fowler-Sabine, the percentage of hearing loss calculated by speech-audiogram according to Boenninghaus and Röser 1973 and the value of hearing loss for speech (a1). It is only a big discrimination loss that points to the presence of inactivity. The discrimination loss was compared in two groups concerning "used" and "unused" ears. We could clearly measure the biggest discrimination loss in the group of unused ears. The clinical consequences were discussed.
根据单侧使用助听器的听力测定实践，我们发现未使用的对侧耳存在失活现象。我们研究了是否可以通过常用的心理声学方法来测量这种失活。我们测试了92名患有重度混合性听力损失的患者。我们不得不指出，根据HAIC（0.5、1和2千赫兹）的平均纯音听力损失、根据福勒-萨宾的听力损失百分比、根据1973年博宁豪斯和勒泽的言语听力图计算的听力损失百分比以及言语听力损失值（a1），均无法测量这种失活。只有较大的辨别力损失表明存在失活现象。我们在“使用”耳和“未使用”耳的两组中比较了辨别力损失。我们能够清楚地测量出未使用耳组中最大的辨别力损失。文中讨论了其临床后果。
