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David K. Brown dbrown at haircell.ear.ucalgary.ca
Mon Jan 29 19:24:12 EST 1996

> >Vanessa....
> >Hopefully you have come to the right place.....OAE's are actually sounds
> >generated by the middle ear in response to stimuli.....OK the easy way to
> >think of them is as an echo coming from the cochlea in response to sound
> >or spontaneously..

Actually they are generated in the cochlea not the middle ear (this view
came from von Helmholtz in the 1950's who suggested that the non-linearity
of the auditory system must come from the eardrum and ossicles).  Current
research revealed that the site of generation is the cochlea and probably
the outer hair cells.  For a good review see:

Probst,R. (1990) "Otoacoustic emissions: an overview," New Aspects of
Cochlear Mechanics and Inner Ear Pathology, Adv. Otorhinolaryngol. 44,


Probst et al. (1991) "A review of otoacoustic emissions," J. Acoust. Soc.
Am, 89(5), 2027-2067.

Hope these are of use,

David K. Brown
Hearing Research Lab
University of Calgary

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