Kärjä J
Acta Otolaryngol. 1975 Jan-Feb;79(1-2):33-9. doi: 10.3109/00016487509124651.
The decline in loudness of a pure tone was used as a criterion of perstimulatory suprathreshold auditory adaptation. The testing technique consisted of continuous binaural balancing of a steady adapting stimulus with an interrupted comparison tone of equal frequency, the pulse and pulse intervals being of 200 msec duration. The measurements were carried out in the majority of cases at 60 dB sensation level for frequencies 2 000 to 4 000 Hz. In normal-hearing test subjects younger than 15 years, as compared with adults, adaptation was of a different character. It could be demonstrated only in a few cases, which were almost without exception among the oldest in their group. The amount of adaptation in the group of 15-18-year-old subjects did not differ statistically from that of the adult persons, even though the adaptation was slight in 25% of the cases. The lacking or slight adaptation was noticeable also in all types of hearing disorders in the young patients.
纯音响度的下降被用作刺激期阈上听觉适应的标准。测试技术包括用频率相等的间断比较音对稳定的适应刺激进行连续双耳平衡，脉冲和脉冲间隔的持续时间为200毫秒。大多数情况下，在2000至4000赫兹频率、60分贝感觉级下进行测量。与成年人相比，15岁以下听力正常的测试对象的适应具有不同的特征。仅在少数情况下可以证明存在适应，而且这些情况几乎无一例外都是其所在组中年龄最大的。15至18岁组的适应量与成年人在统计学上没有差异，尽管在25%的病例中适应程度较轻。年轻患者的所有听力障碍类型中也都存在缺乏或轻微适应的情况。
