<Q>otoacustic emission

[Jeffrey Sirianni]

In article <3pq13t$ipe at news.uni-paderborn.de>, scheren at pbemt3.uni-paderborn.de (Frank Scherenschlich) says:
>
>Hi,
>I need some information about otoacustic emission onthe net.
>Does anybody know somesthing about it?
>
>Thanks
>Frank
>
>-----------------------------------------------------------------
>Frank Scherenschlich                  University of Paderborn
>scheren at pbemt2.uni-paderborn.de       Electrical Measurement
>

To be as brief as possible, otoacoustic emissions are sounds presumably
generated by the inner ear (via outer hair cells) that are recorded in
the ear canal.  These emissions (OAEs) can be present spontaneously (SOAEs)
or are present when evoked by clicks (transient- TOAEs), tone bursts, or
2 tonal stimuli that evoke a distortional product emisison (DPOAEs).  The
presence of the evoked emmissions tends to indicate functional outer hair
cells, while the absence suggests the opposite.  Spontaneous OAEs are present
in some individuals (F>M) and their presence and clinical significance is
still unknown at this time.

There are numerous reviews on the subject of OAEs.  If anyone has a specific
reference that they would recommend, please include it in a follow-up to
this post.

Jeff Sirianni     @(((<{
University of Texas at Austin
Communication Sciences and Disorders
CMA, 2nd Floor Clinic
Austin, TX  78712-1089
sirianni at uts.cc.utexas.edu
jgsaudio at aol.com