An Experimental Study of the Acoustic Impedance of the Middle Ear and Its Transmission Properties
- 1 January 1965
- journal article
- research article
- Published by Taylor & Francis in Acta Oto-Laryngologica
- Vol. 60 (1-6) , 129-149
- https://doi.org/10.3109/00016486509126996
Abstract
The acoustic impedance at the eardrum and the cochlear microphonic potential at constant sound pressure level at the eardrum were measured in anesthetized cats and rabbits. It was found that the inverse of the impedance (admittance) and the cochlear microphonic potential at constant sound pressure are proportional over a large frequency range. In addition, the effects of opening of the middle-ear cavities and of variation of the air pressure in the cavity, as well as of activity of the middle-ear muscles were studied. In further experiments, the impedance of the eardrum itself and of the middle ear with the cochlea disconnected was measured.Keywords
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