The effect of longitudinal noise exposure on behavioral audiograms and transient-evoked otoacoustic emissions

2007 ◽  
Vol 46 (3) ◽  
pp. 119-127 ◽  
Author(s):  
Amnon Duvdevany ◽  
Miriam Furst
Author(s):  
Patrícia Arruda de Souza Alcarás ◽  
Bianca Simone Zeigelboim ◽  
Maria Cristina Alves Corazza ◽  
Débora Lüders ◽  
Jair Mendes Marques ◽  
...  

This study aimed to assess the central auditory functions of endemic disease control agents. This cross-sectional cohort study comprised two groups: the exposed group, with 38 male endemic disease control agents with simultaneous occupational noise and pesticide exposure; and the control group, with 18 age- and sex-matched workers without occupational noise and/or pesticide exposure. All participants underwent pure-tone audiometry, brainstem auditory evoked potentials, dichotic digits test, and transient-evoked otoacoustic emissions suppression effect. There was a significant inter-group difference in waves III and V absolute latencies, and interpeak I–III and I–V latencies bilaterally, with worse results found in the exposed group. Abnormal dichotic digits test results occurred more often in the exposed group, with a significant association between pesticide- and noise-exposure and the abnormal results (p = 0.0099). The transient-evoked otoacoustic emissions with suppression effect did not yield significant inter-group differences. It was concluded that pesticide and noise exposure induce harmful effects on the central auditory functions, particularly on the brainstem and figure-ground speech-sound auditory skills.


2013 ◽  
Vol 127 (3) ◽  
pp. 233-238 ◽  
Author(s):  
A J Hope ◽  
L M Luxon ◽  
D-E Bamiou

AbstractObjective:To assess auditory processing in noise-exposed subjects with normal audiograms and compare the findings with those of non-noise-exposed normal controls.Methods:Ten noise-exposed Royal Air Force aircrew pilots were compared with 10 Royal Air Force administrators who had no history of noise exposure. Participants were matched in terms of age and sex. The subjects were assessed in terms of: pure tone audiometry, transient evoked otoacoustic emissions, suppression of transient evoked otoacoustic emissions in contralateral noise and auditory processing task performance (i.e. masking, frequency discrimination, auditory attention and speech-in-noise).Results:All subjects had normal pure tone audiometry and transient evoked otoacoustic emissions amplitudes in both ears. The noise-exposed aircrew had similar pure tone audiometry thresholds to controls, but right ear transient evoked otoacoustic emissions were larger and speech-in-noise thresholds were elevated in the noise-exposed subjects compared to controls.Conclusion:The finding of poorer speech-in-noise perception may reflect noise-related impairment of auditory processing in retrocochlear pathways. Audiometry may not detect early, significant noise-induced hearing impairment.


2021 ◽  
Vol 20 (4) ◽  
pp. 21-26
Author(s):  
V. V. Dvoryanchikov ◽  
◽  
M. S. Kuznetsov ◽  
L. A. Glaznikov ◽  
M. V. Morozova ◽  
...  

Hearing organ damage caused by high-intensity noise continues to be one of the actual problems of modern otorhinolaryngology. This study aims to evaluate the effectiveness of transient evoked otoacoustic emissions (TEOAEs) as a screening method for hearing research. 15 patients (men aged 18 to 28 years) were examined before and after exposure to high-intensity noise of artillery weapons. All patients passed a set of diagnostic tests: otoscopy, whispered voice test, tonal threshold audiometry, and TEOAE. Hearing thresholds according to audiometry did not exceed normal values. However, the number of people who passed the test TEOAE after noise exposure was 46.6% in the right ear and 40.0% in the left ear, which was statistically significantly different from the data obtained before the shooting. The authors conclude that TEOAE allows evaluation of the functional state of the hearing organ better than tonal threshold audiometry. This technique can be used for mass screening of individuals who are most sensitive to the effects of high-intensity noise, as well as for their further in-depth audiological monitoring.


2015 ◽  
Vol 16 (1) ◽  
pp. 15-24
Author(s):  
Vance Gunnell ◽  
Jeff Larsen

Hearing thresholds and distortion product otoacoustic emissions were measured for teachers of vocal performance who were gathered for a national conference. Results showed mean audiometric thresholds to be consistent with noise induced hearing loss, more than what would be expected with normal aging. Years of instruction and age were considered as factors in the hearing loss observed. It was concluded that hearing conservation should be initiated with this group to help raise awareness and protect them from hearing loss due to occupational noise exposure.


2016 ◽  
Vol 140 (3) ◽  
pp. 1949-1973 ◽  
Author(s):  
Douglas H. Keefe ◽  
M. Patrick Feeney ◽  
Lisa L. Hunter ◽  
Denis F. Fitzpatrick

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