Age-related changes in transiently evoked otoacoustic emissions and distortion product otoacoustic emissions in normal-hearing ears

Age-related changes in transiently evoked otoacoustic emissions (TEOAEs) and distortion product otoacoustic emissions (DPOAEs) were evaluated in normal-hearing ears. The TEOAE was elicited by a non-linear click with a stimulus level of 82±1 dB SPL using ILO 88 in 251 normal-hearing ears. The DPOAE a...

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Bibliographic Details
Published in:Auris, nasus, larynx nasus, larynx, 1998-05, Vol.25 (2), p.121-130
Main Authors: Satoh, Yasuo, Kanzaki, Jin, O-Uchi, Toshiaki, Yoshihara, Shigemitsu
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adolescent
Adult
Aged
Aging
Aging - physiology
Auditory Threshold - physiology
Cochlear mechanics
Female
Hair Cells, Auditory, Outer - physiology
Hearing - physiology
Human ear
Humans
Male
Middle Aged
Otoacoustic emissions
Otoacoustic Emissions, Spontaneous - physiology
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Summary:Age-related changes in transiently evoked otoacoustic emissions (TEOAEs) and distortion product otoacoustic emissions (DPOAEs) were evaluated in normal-hearing ears. The TEOAE was elicited by a non-linear click with a stimulus level of 82±1 dB SPL using ILO 88 in 251 normal-hearing ears. The DPOAE at the frequency of 2fl–f2 was measured with stimulus levels of 70 dB SPL (fl) and 60 dB SPL (f2) and with an f2/fl ratio of 1.2, using ILO 92 in 64 normal-hearing ears. The results obtained showed that TEOAE and DPOAE were decreased with increasing age. Moreover, the same pattern of gradual decrease in TEOAE and in DPOAE suggests the possibility of the same generating mechanism associated with outer hair cells (OHCs).
ISSN:0385-8146
1879-1476
DOI:10.1016/S0385-8146(97)10033-5