PMID: 9165349May 1, 1997Paper

Contralateral suppression and stimulus rate effects on evoked otoacoustic emissions

Hearing Research
G Lina-GranadeL Collet

Abstract

Transiently evoked otoacoustic emissions (EOAE) were recorded in normal-hearing humans using pseudorandom pulse trains. This allowed the effect of increasing stimulus rate to be studied on EOAE amplitudes, input-output (I/O) functions and suppression by contralateral stimulation. EOAEs are very probably due to micromechanical properties of cochlear outer hair cells, and contralateral suppression is considered to result from olivo-cochlear efferent activation. EOAEs at various stimulus rates showed excellent reproducibility. Total EOAE amplitude diminished as interstimulus interval (ISI) decreased from 20 to 3 ms, but not for ISIs under 3 ms. The amplitude reduction was significant only on EOAE spectrum bands below 3.4 kHz. I/O functions, which kept a linear pattern, were steeper, and contralateral suppression was lower, with the highest stimulus rate (1111 c/s) relative to other rates. The EOAE decline with increasing stimulus rate might be due to incomplete recovery after adaptation of outer hair cells. The lower contralateral suppression at high stimulus rates suggests that crossed olivo-cochlear bundle action is lessened when outer hair cells are responding to a high-rate stimulus. An explanation may be that contralateral st...Continue Reading

References

Nov 1, 1978·The Journal of the Acoustical Society of America·D T Kemp
Jan 1, 1992·ORL; Journal for Oto-rhino-laryngology and Its Related Specialties·Z KevanishviliZ Gamgebeli
Apr 1, 1990·Ear and Hearing·D T KempP Bray
Jul 1, 1985·Acta Oto-laryngologica·R L Smith
Apr 1, 1988·Hearing Research·B L Lonsbury-MartinA C Coats
Dec 10, 1983·The Journal of Comparative Neurology·J J GuinanB E Norris
Jan 1, 1982·Audiology : Official Organ of the International Society of Audiology·U Eysholdt, C Schreiner
Jul 1, 1994·Audiology : Official Organ of the International Society of Audiology·G Lina-GranadeA Morgon
Oct 1, 1993·Ear and Hearing·T W PictonD E Rabinovitch
Jul 1, 1993·The Journal of the Acoustical Society of America·A R Thornton
Jul 1, 1995·Hearing Research·G Lina-Granade, L Collet

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Citations

Sep 8, 2012·Clinical & Developmental Immunology·Peter D Gorevic
Jun 25, 2008·International Journal of Audiology·Hala Elsisy, Ananthanarayan Krishnan
Aug 6, 2002·International Journal of Audiology·Alessandra Spada Durante, Renta Mota Mamede Carvalho
May 30, 2002·International Journal of Audiology·Clare O'RourkeVeronica Smyth
Jul 15, 2015·International Journal of Audiology·Lyndal CarterMark Seeto

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