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Effect of age on speech recognition in noise and on contralateral transient evoked otoacoustic emission suppression

Published online by Cambridge University Press:  26 March 2007

S T Yılmaz*
Affiliation:
Dikimevi Vocational School of Health, Ankara, Turkey
G Sennaroğlu
Affiliation:
Department of Audiology & Speech Pathology, Medical Faculty, Ankara, Turkey
L Sennaroğlu
Affiliation:
Department of Otolaryngology, School of Medicine, Hacettepe University, Ankara, Turkey
S K Köse
Affiliation:
Department of Biostatistics, Medical Faculty, Ankara University, Ankara, Turkey
*
Address for correspondence: Dr Suna Tokgöz Yilmaz, Ankara Üniversitesi Dikimevi Sağlık Hizmetleri Meslek Yüksekokulu, Tıp Fakültesi Kampüsü, 06590 Dikimevi, Ankara, Turkey. Fax: +90 312 3197884 E-mail: sunatokgoz@yahoo.com

Abstract

Introduction:

We aimed to study the influence of age, in normal hearing individuals, on: the masking level difference test, the speech recognition in noise test, the transient evoked otoacoustic emissions test, and the contralateral transient evoked otoacoustic emission suppression test. We also aimed to research the effect of age when using these tests to evaluate the central auditory nervous system.

Methods:

Transient evoked otoacoustic emissions and contralateral transient evoked otoacoustic emission suppression were measured in all subjects. Subjects also underwent masking level difference and speech recognition in noise tests.

Results:

We found a decrease in transient evoked otoacoustic emission amplitudes, speech recognition in noise scores and hearing thresholds with age. We also found that higher masking level difference values were associated with lower speech recognition in noise scores and contralateral transient evoked otoacoustic emission suppression values.

Conclusion:

We conclude that decreasing speech recognition in noise scores are associated with decreasing contralateral transient evoked otoacoustic emission supression values. This effect may be related to medial efferent system dysfunction.

Information

Type
Main Articles
Copyright
Copyright © JLO (1984) Limited 2007

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