听觉辨别阈的测定  

Measurement of auditory discriminating thresholds

作　　者：梁之安[1] 邵殿华[1] 罗维之[1] 

机构地区：[1]中国科学院上海生理研究所

出　　处：《声学技术》1997年第2期49-52,共4页Technical Acoustics

摘　　要：本工作用一种结构简单操作方便的新型调频调幅调相声刺激器，准确地在人（用心理物理方法）和豚鼠（用电生理方法）测定了听觉的频率辨别阈（Δｆ）、强度辨别阈（ΔＩ）和相位辨别阈（Δ）。在听力正常的受试者，测得的Δｆ为１．３±０．６ｐｐｓ（ｐｕｌｓｅｓｐｅｒｓｅｃ．以下同，编者注），ΔＩ为０．４±０．２ｄＢ，Δ为０．９±０．３°。在听力正常的豚鼠，它们相应为２．５±１．１ｐｐｓ，０．５±０．２ｄＢ和１．２±０．５°。With a newly designed FM/AM/φM sound stimulator, accurate measurements of auditory discriminating thresholds of frequency (Δf), intensity (ΔI) and phase (Δφ) were performed psychophysically in humans and electrophysiologically in guinea pigs. For normal hearing human subjects, the measured thresholds amount to 1.3±0 6 pps for Δf,0 4±0 2dB for ΔI,and 0.9±0 3° for Δφ For normal hearing guinea pigs, they are 2.5±1 1pps, 0 5±0 2 dB and 1.2±0 5°, correspondingly. The designed stimulator is simple in construction and easy to manipulate and the operating principles are described in details.

关 键 词：听觉 辨别阈 声刺激器 工作原理 

分 类 号：R764.5[医药卫生—耳鼻咽喉科]