听力正常老年人皮层听觉诱发电位研究

Research on cortical auditory evoked potential in elderly people with normal hearing

文章研究了听力正常老年人的P1-N1-P2波的特征值及其影响因素,并初步探讨其与言语感知之间的相关性。对40例听力正常的老年人进行了不同频段言语刺激声条件下的P1-N1-P2波测试与不同信噪比条件下的言语识别率测试。使用非参数检验分析不同言语刺激声频段P1-N1-P2波各波潜伏期、幅值的差异性,使用斯皮尔曼(Spearman)相关性检验分析老年人年龄、纯音听阈与P1-N1-P2波潜伏期、幅值之间的相关性;使用Spearman相关性检验分析P1-N1-P2波各波潜伏期和幅值与言语识别率之间的相关性。结果表明,刺激声频段、年龄、纯音听阈对听力正常老年人P1-N1-P2波各波潜伏期、幅值有显著影响,听力正常老年人P1-N1-P2波特征值与言语感知具有相关性。

In this paper,the characteristics of P1-N1-P2 waves in the elderly with normal hearing and its influencing factors are studied,and its correlation with speech perception is preliminarily discussed.Forty elderly people with normal hearing are participated in the test of P1-N1-P2 waves under speech sound stimulus in different frequency bands and in the test of speech recognition score under different signal to noise ratios.Non-parametric test is used to analyze the differences of the latent period and amplitude of each wave of P1-N1-P2 waves under different speech stimulus.The Spearman correlation test is used to analyze the correlation of the age and pure tone hearing threshold with the latent period and amplitude of P1-N1-P2 waves,and the Spearman correlation test is also used to preliminarily analyze the correlation of the latent period and amplitude of each wave of P1-N1-P2 waves with the speech recognition score.The results show that the frequency band of sound stimulus,the age and the pure tone hearing threshold have remarkable effect on the latent period and amplitude of each wave of P1-N1-P2 waves for the elderly with normal hearing,and the characteristics of the P1-N1-P2 waves is correlated with the speech perception for the elderly with normal hearing.