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  • Title: Effects of impulse noise on transiently evoked otoacoustic emission in soldiers.
    Author: Konopka W, Pawlaczyk-Luszczynska M, Sliwinska-Kowalska M, Grzanka A, Zalewski P.
    Journal: Int J Audiol; 2005 Jan; 44(1):3-7. PubMed ID: 15796096.
    Abstract:
    The aim of the study was to assess the effects of exposure to impulse noise on TEOAE, as compared to PTA. The study comprised 92 soldiers, subjected to impulse noise during military service. The control group consisted of secondary school students, not exposed to noise. Extended high frequency PTA, and TEOAE were recorded before and after one year of military service. The total level of noise and spectrum analysis were performed for all kinds of weapons, separately. The highest levels of noise for weapons were related to frequencies from 1.6-16 kHz. After military service significant deterioration of hearing was observed on average by 6 dB exclusively at the frequencies of 10 and 12 kHz. TEOAE reduction was registered predominantly at frequencies of 2, 3 and 4 kHz, with the greatest decrease at 2 kHz (p <0.02). The control group did not show any significant audiometric changes as well as TEOAE during the time of experiment.
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