Martínez Ibargüen A, Santaolalla Montoya F, Sánchez del Rey A, Macías Fernández A
Cátedra de ORL, Universidad del País Vasco.
Acta Otorrinolaringol Esp. 1995 Jul-Aug;46(4):247-52.
In this study we have analyzed the incidence, range, frequency spectrum and threshold of distortion products in a sample of 232 normal hearing person. 116 younger adults, 58 female ranging in age from 18 to 30 years (mean age 23.1) and 58 males ranging in age from 18 to 32 (mean age 23.7) were included in the study. In all the ears studied, the presence of distortion products in a normal ear were found with regularity in the frequency region between 700 to 6,000 Hz. Higher incidence occurred in younger people and women but was not statistically notable. There is a direct correlation between distortion products amplitude and its primary intensity. Distortion products amplitude increases progressively from low (770 Hz) to high frequencies (6,000 Hz). The amplitude of distortion products and its mean value is higher in women, in all frequencies, except in the 700 to 1,000 Hz region. Input/output function had a mean of 50 dB SPL at 1 kHz, 43.8 at 2 kHz, 38.4 at 4 kHz and 33.5 at 6 kHz.
在本研究中，我们分析了232名听力正常者样本中畸变产物的发生率、范围、频谱和阈值。研究纳入了116名年轻人，其中58名女性，年龄在18至30岁之间（平均年龄23.1岁），58名男性，年龄在18至32岁之间（平均年龄23.7岁）。在所有研究的耳朵中，正常耳朵在700至6000赫兹的频率区域内规律地出现畸变产物。年轻人和女性中畸变产物的发生率较高，但无统计学显著性差异。畸变产物幅度与其初始强度之间存在直接相关性。畸变产物幅度从低频（770赫兹）到高频（6000赫兹）逐渐增加。除700至1000赫兹区域外，在所有频率下，女性的畸变产物幅度及其平均值均较高。输入/输出函数在1千赫时的平均值为50分贝声压级，2千赫时为43.8，4千赫时为38.4，6千赫时为33.5。
