Hearing...

Jeffrey G. Sirianni sirianni at uts.cc.utexas.edu
Sun Oct 29 14:15:48 EST 1995


{Original Post}

If a tympanic membrane has basically no vibrating capacity (i.e. it
is perforated) how much hearing would be expected, if any?
and is bone conduction affected at all?  i would think not.

In article <46rpe7$13c at newsbf02.news.aol.com>, uncaud at aol.com (UNCAud) says:
>
>From what I know, I would expect a mild to moderate conductive loss (ie
>bone conduction should not be affected).
>Jenn Lantz

It all depends on the size of the perforation.  AC threshold would increase in
proportion to the size of the perforation, up to about 50 dB.

Jeff



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