探测音频率对声反射增长函数的影响。

The effects of probe-tone frequency on the acoustic-reflex growth function.

作者信息

Lutolf John J, O'Malley Honor, Silman Shlomo

机构信息

Department of Speech, Communication Sciences and Theatre, St. John's University, 8000 Utopia Parkway, Jamaica, NY 11439, USA.

出版信息

J Am Acad Audiol. 2003;14(2):109-18. doi: 10.3766/jaaa.14.2.6.

DOI:10.3766/jaaa.14.2.6

PMID:12830846

Abstract

Acoustic-reflex growth functions (ARGFs) were obtained from 20 normal-hearing listeners. Contralateral acoustic reflexes (ARs) were elicited with pure tones of 2000 Hz. The magnitude of changes in static compliant susceptance (BA) and conductance (GA) were monitored with probe-tone frequencies of 226 Hz, 678 Hz and 1000 Hz. ARGFs were obtained with six combinations of probe-tone frequency/admittance component: 226 Hz BA, 226 Hz GA, 678 Hz BA, 678 Hz GA, 1000 Hz BA, and 1000 Hz GA. Peak conductance (GA) and susceptance (BA) ARs were largest within the 678 Hz GA and 1000 Hz BAARGFs, respectively. Among high-frequency probe tones, the patterns of AR growth were larger and less variable for the 678 Hz GA ARGF and the 1000 Hz BA ARGF as determined by the magnitude of their linear (b1) and quadratic (b2) polynomial coefficients and the value of their squared correlation coefficients (R2).

摘要

从20名听力正常的受试者中获得了声反射增长函数（ARGFs）。用2000Hz纯音引出对侧声反射（ARs）。使用226Hz、678Hz和1000Hz的探测音频率监测静态顺应性电纳（BA）和电导（GA）的变化幅度。通过探测音频率/导纳分量的六种组合获得ARGFs：226Hz BA、226Hz GA、678Hz BA、678Hz GA、1000Hz BA和1000Hz GA。峰值电导（GA）和声纳（BA）ARs分别在678Hz GA和1000Hz BA ARGFs中最大。在高频探测音中，根据其线性（b1）和二次（b2）多项式系数的大小及其平方相关系数（R2）的值，678Hz GA ARGF和1000Hz BA ARGF的AR增长模式更大且变化更小。