Hallmo P, Sundby A, Mair I W
Department of Otorhinolaryngology, Ullevål University Hospital, Oslo, Norway.
Scand Audiol. 1994;23(3):165-70. doi: 10.3109/01050399409047503.
Air-conduction and bone-conduction thresholds have both been determined in the conventional audiometric frequency ranges and in the extended high frequencies through respectively 18 and 16 kHz for otologically healthy subjects in different age groups covering the age span 8-14 years through the eighth decade. Subjects younger than 30 years had conventional frequency air-conduction thresholds < or = 10 dB HL, whereas the corresponding thresholds of older subjects were within 0.1 and 0.9 percentiles of ISO 7029 (1984). Age- and gender-specific thresholds, medians and ranges, are presented for bone conduction in the extended high frequencies. Thresholds increase with both age and frequency in the range 8-16 kHz, and there is a largely non-significant tendency for thresholds to be higher in males. Threshold deterioration at the highest frequencies is already present at age 18-24 years compared with the youngest (8-14 year) age group.
针对年龄跨度从8岁至八十多岁的不同年龄组的耳科健康受试者，分别在常规听力测定频率范围以及扩展高频范围（分别至18kHz和16kHz）内测定了气导和骨导阈值。30岁以下的受试者常规频率气导阈值≤10dB HL，而年龄较大受试者的相应阈值在ISO 7029（1984）的0.1至0.9百分位数范围内。给出了扩展高频范围内骨导的年龄和性别特异性阈值、中位数和范围。在8 - 16kHz范围内，阈值随年龄和频率增加，并且男性阈值在很大程度上有较高的非显著趋势。与最年轻的（8 - 14岁）年龄组相比，在18 - 24岁时最高频率处的阈值就已出现恶化。
