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Kemp(1978)首先报道人听觉系统的诱发声放射(EAEs),本文目的是研究151耳(2～88岁)EAEs特征(发生率,阈值,波谱)与年龄相关的变化。发生率:60岁以内100％存在EAEs,60岁以上EAEs的发生率为35％。阈值。EAEs绝对阈值(dB,HL)随年龄变化,40岁以内EAEs绝对阈值无统计学上的差异,40岁以上EAEs绝对阈值呈线性增加,60岁以上平均阈值达到28.75dB(HL)。EAEs绝对阔值与短声听阈之间呈线性关系(r=0.88)。波谱:有两种类型。一种由一个宽的连续频带组成,500～2500Hz之间变化的最大振幅在1～2KH_z之间,另一种由分隔频率窄带峰重叠在宽带波
Kemp (1978) first reported evoked acoustic emission (EAEs) of the human auditory system. The purpose of this paper was to investigate the age-related changes in the characteristics (frequency, threshold, and spectrum) of EAEs in 151 ears (2-88 years). Incidence: 100% of EAEs are present within 60 years of age and 35% of those over 60 years of age. Threshold. The absolute thresholds of EAEs (dB, HL) varied with age. The absolute thresholds of EAEs within 40 years old had no statistical difference. The absolute thresholds of EAEs over 40 years old increased linearly, and the average threshold above 60 years old reached 28.75 dB (HL). There is a linear relationship between the absolute threshold of EAEs and the auditory threshold (r = 0.88). Spectrum: There are two types. One by a wide continuous frequency band, 500 ~ 2500Hz between the maximum amplitude changes between 1 ~ 2KH_z, the other by the frequency of narrow band narrow band overlap in the broadband wave