Corthals, Paul

Degeest, Sofie

Keppler, Hannah

Vinck, Bart

English

Ghent University Academic Bibliography

RESULTS OF OTOACOUSTIC EMISSIONS AND EFFERENT SUPPRESSION IN SUBJECTS WITH CHRONIC TINNITUS AFTER NOISE EXPOSURE DURING RECREATIONAL ACTIVITIES  Keppler, H. 1, Corthals, P. 1,2, Vinck, B. 1,3, Degeest, S. 1  1Ghent University, Department of Oto-rhino-laryngology and logopaedic-audiologic sciences, Ghent, Belgium; 2University College Ghent, Department of Speech Therapy and Audiology, Ghent, Belgium; 3University of Pretoria, Department of Communication Pathology, Pretoria, South Africa  Introduction Noise exposure can cause noise-induced hearing loss (NIHL) as well as tinnitus. NIHL damages primarily the outer hair cells in the cochlea. Therefore, otoacoustic emissions (OAEs) could provide valuable information regarding the cochlear status in subjects with tinnitus. OAEs with contralateral acoustic stimulation can be used to evaluate the efferent auditory system.   Aims The aim of the study was to compare the results of OAEs and efferent suppression (ES) in subjects with chronic tinnitus due to recreational noise exposure with control subjects.   Patients and methods The hearing status of 11 ears in each group was evaluated by admittance measures, pure tone audiometry, transient evoked OAEs (TEOAEs), distortion product OAEs (DPOAEs) and ES.   Results First, the number of present TEOAEs or DPOAEs at most frequency bands was lower in the tinnitus group as compared to the control group. Second, the mean amplitudes of TEOAEs, DPOAEs and ES in subjects with tinnitus was smaller than in the control group. Moreover, there were statistically significant differences in TEOAE amplitudes at 1.0 and 4.0 kHz, and DPOAE amplitudes at 1.5 kHz.   Conclusion Literature concerning TEOAEs, DPOAEs or ES in subjects with tinnitus is inconclusive. The current study found decreased TEOAE and DPOAE amplitudes and ES in subjects with chronic tinnitus after recreational noise exposure as compared to the control group. OAEs can therefore be used as an objective evaluation of the cochlear hearing status in subjects with tinnitus. The role of the efferent auditory system in subjects with tinnitus should further be explored.  

Results of otoacoustic emissions and efferent suppression in subjects with chronic tinnitus after noise exposure during recreational activities

https://biblio.ugent.be/publication/4227909/file/4227919

Results of otoacoustic emissions and efferent suppression in subjects with chronic tinnitus after noise exposure during recreational activities

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Ghent University Academic Bibliography