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Intermittent exposure to noise: effects on hearing.

J Sataloff, R T Sataloff, H Menduke

    The Annals of Otology, Rhinology, and Laryngology
    |November 1, 1983
    PubMed
    Summary
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    Intermittent exposure to intense noise, like from jackhammers, causes severe high-frequency hearing loss but minimal low-frequency loss. This contrasts with continuous noise exposure, impacting occupational hearing conservation strategies.

    Area of Science:

    • Occupational Health
    • Audiology
    • Environmental Noise Effects

    Background:

    • Most research on noise and hearing focuses on continuous exposure.
    • Previous findings suggested intermittent noise causes less hearing damage than continuous exposure.
    • Understanding noise-induced hearing loss is crucial for worker protection.

    Purpose of the Study:

    • To investigate the specific effects of intermittent intense noise exposure on hearing.
    • To compare hearing loss patterns from intermittent versus continuous noise exposure.
    • To identify the impact of jackhammer noise on auditory function in workers.

    Main Methods:

    • Screened 12,000 workers to identify 295 eligible subjects.
    • Focused on subjects exposed to intermittent jackhammer noise at peak levels of 118 dBA.

    Related Experiment Videos

  • Analyzed hearing loss patterns across different frequency ranges after prolonged exposure.

    • Main Results:

    • Intermittent intense noise exposure led to severe high-frequency hearing loss.
    • Minimal to no hearing loss was observed in the lower frequencies.
    • This pattern significantly differed from the effects of continuous noise exposure at the same intensity.

    Conclusions:

    • Intermittent exposure to intense noise causes a distinct pattern of hearing loss, primarily affecting high frequencies.
    • This finding challenges previous assumptions about the lesser damaging effects of intermittent noise.
    • Further research is needed to determine if this pattern applies to all types of intermittent noise sources.