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Benefit acclimatization in elderly hearing aid users

R M Cox1, G C Alexander, I M Taylor

  • 1School of Audiology & Speech-Language Pathology, University of Memphis, Tennessee 38105, USA.

Journal of the American Academy of Audiology
|December 1, 1996
PubMed
Summary
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Hearing aid benefit in noise improves gradually over weeks for many users, though significant gains are uncommon. This study explored hearing aid acclimatization in elderly individuals with hearing loss.

Area of Science:

  • Audiology
  • Speech and Hearing Sciences
  • Gerontology

Background:

  • Previous research suggested hearing aid benefit in noise may increase over time.
  • This acclimatization was hypothesized to involve optimizing the use of high-frequency speech cues.
  • This study investigated this phenomenon in elderly individuals with new hearing aid fittings.

Purpose of the Study:

  • To explore the time course of hearing aid benefit in noisy environments for elderly individuals.
  • To determine if acclimatization to hearing aids leads to improved speech intelligibility over 12 weeks.
  • To investigate the role of high-frequency acoustic cues in this acclimatization process.

Main Methods:

  • 22 elderly participants with mild to moderate sensorineural hearing loss were fitted unilaterally with hearing aids.

Related Experiment Videos

  • Speech intelligibility was tested over a 12-week post-fitting period.
  • A long-term follow-up assessed benefit after several months of hearing aid use.

    • Main Results:

    • A significant group improvement in hearing aid benefit for speech in noise was observed, starting around 6 weeks.
    • The magnitude of improvement was small for most participants; only three showed dramatic gains.
    • No evidence supported a specific role for high-frequency cues in the observed benefit.
    • Long-term follow-up showed increased benefit solely due to a decline in unaided listening performance.

    Conclusions:

    • Hearing aid acclimatization in noise occurs gradually over several weeks for some elderly users.
    • The benefit increase is often small and may be influenced by declining unaided abilities over time.
    • The hypothesized role of high-frequency cues was not supported by this investigation.