Variations in Sound Pressure Produced in Guinea-Pig Ears Due to Normal and Abnormal Eardrums
- 1 March 1955
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 27 (2) , 373-375
- https://doi.org/10.1121/1.1907530
Abstract
Sound pressures measured with a probe-tube microphone in front of the tympanic membrane of the guinea pig were compared at 100-cps intervals, in the frequency range 50-8000 cps., to the sound pressures similarly measured in a speculum coupling an acoustic source to the ear canal. Rather different functions were obtained for each of 5 conditions: (1) normal, (2) hair-line slit in the tympanic membrane, (3) rupture of tympanic membrane, (4) fluid behind tympanic membrane, and (5) bulla open. Variability in each of the categories is presented. Variability was greatest in the normal ears and least in the ears with the bulla open.This publication has 1 reference indexed in Scilit:
- MODIFICATION OF COCHLEAR MICROPHONICS AND ACTION POTENTIALS BY KCl SOLUTION AND BY DIRECT CURRENTSJournal of Neurophysiology, 1952