正常人类耳朵的声畸变产物2f2 - f1的特征

Characteristics of the acoustic distortion product 2f2-f1 from the normal human ear.

作者信息

Erminy M, Avan P, Bonfils P

机构信息

Auditory Research Laboratory (CNRS UMR Neurobiologie des reseaux sonsorimoteurs and Formation Associée Claude Bernard), University of Paris V, Faculty Necker-Enfants Malades, Hospital Boucicaut, France.

出版信息

Acta Otolaryngol. 1998 Jan;118(1):32-6. doi: 10.1080/00016489850155099.

DOI:10.1080/00016489850155099

PMID:9504160

Abstract

The aim of this study was to determine the basic properties of the 2f2-f1 distortion product otoacoustic emissions (DPOEs) in 36 normally hearing subjects and to compare their characteristics with those of the 2f1-f2 DPOEs. The influence of stimulation parameters on 2f2-f1 DPOE behaviour was examined: i) stimulation levels varied from 40 to 70 dB sound pressure level in 10 dB steps; and ii) two values of the f2/f1 ratio were used (1.12 and 1.22). The prevalence and the level of the 2f2-f1 DPOEs depended on three parameters: f2 frequency, stimulation level and f2/f1 ratio. The results showed many differences between the characteristics of 2f1-f2 and 2f2-f1 DPOEs, probably due to their being generated by different mechanisms. Thus, the 2f2-f1 DPOEs may provide different information about the cochlear status and could be of clinical interest.

摘要

本研究的目的是确定36名听力正常受试者的2f2 - f1畸变产物耳声发射（DPOEs）的基本特性，并将其特征与2f1 - f2 DPOEs的特征进行比较。研究了刺激参数对2f2 - f1 DPOE行为的影响：i）刺激水平以10 dB步长在40至70 dB声压级之间变化；ii）使用了两个f2/f1比值（1.12和1.22）。2f2 - f1 DPOEs的发生率和水平取决于三个参数：f2频率、刺激水平和f2/f1比值。结果显示2f1 - f2和2f2 - f1 DPOEs的特征存在许多差异，这可能是由于它们由不同机制产生。因此，2f2 - f1 DPOEs可能提供有关耳蜗状态的不同信息，并且可能具有临床意义。