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Article
October 1943

AUDIOMETRIC EFFECTS OF VOLUNTARY CONTRACTION OF THE TENSOR TYMPANI MUSCLES

Author Affiliations

MEDICAL CORPS, ARMY OF THE UNITED STATES
From the Department of Otolaryngology, School of Aviation Medicine, Randolph Field, Texas.

Arch Otolaryngol. 1943;38(4):369-372. doi:10.1001/archotol.1943.00670040383010
Abstract

Voluntary and involuntary contractions of the tensor tympani muscles were recognized by Politzer, Luschka and others nearly one hundred years ago. Politzer1 reported, in discussing 1 of his cases, that "during the contractions the hearing distance was diminished, the deep tones became deadened and indistinct, and the high tones ascended about one quarter of a tone."

A number of similar cases have been reported since that time, but so far as I could determine there is no audiometric record of the effects of voluntary contraction of the tensor tympani muscle in the medical literature. Therefore this case is presented in the hope that the observations may help in the interpretation of audiometric records of loss of hearing.

REPORT OF A CASE  Lieut. W. B., in a routine examination, was found to be able to contract his tensor tympani muscles voluntarily. The membrana tympani retracted, and the handle of the malleus

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