Bumm P, Krüger B, Lang E
Z Gerontol. 1980 Mar-Apr;13(2):113-9.
A significant loss of performance of the ear was found to be a function of age in all audiological tests. Clear cases of presbycusis were only determined in persons above 70 years of age. According to finds, a severely handicapping loss in the ability to understand speech only occurred in the 90-year-old group suffering from primary presbycusis. A disturbing impairment of hearing in younger persons is most likely due to a secondary presbycusis. Contrary to previous opinions suprathreshold tests indicate a high percentage of sensoneural hearing losses are due to cochlear lesions. The dichotic discrimination test showed the highest correlation to age. This especially seems to be caused by age-inherent changes in central pathways. Altogether, although it has been this study were considerably handicapped, they were, however, thoroughly able to understand speech under favorable conditions.
在所有听力测试中，发现听力功能的显著下降是年龄的函数。仅在70岁以上的人群中确定了明显的老年性耳聋病例。根据研究结果，只有在患有原发性老年性耳聋的90岁人群中才出现严重妨碍言语理解能力的听力损失。年轻人听力的令人不安的损害很可能是由于继发性老年性耳聋。与以前的观点相反，阈上测试表明，相当高比例的感音神经性听力损失是由耳蜗病变引起的。双耳辨别测试与年龄的相关性最高。这似乎尤其由中枢通路中固有的年龄变化引起。总的来说，尽管这项研究受到了很大阻碍，但在有利条件下，他们仍完全能够理解言语。
