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Extended high-frequency thresholds in older adults

L J Matthews1, F S Lee, J H Mills

  • 1Department of Otolaryngology and Communicative Sciences Medical University of South Carolina, Charleston, USA.

Journal of Speech, Language, and Hearing Research : JSLHR
|February 1, 1997
PubMed
Summary

This study measured extended high-frequency (EHF) auditory thresholds in older adults, finding significantly higher thresholds compared to younger individuals. EHF audiometry is reliable in this population, even with hearing loss.

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Area of Science:

  • Audiology
  • Gerontology
  • Hearing Science

Background:

  • Auditory sensitivity at extended high frequencies (EHF, >8 kHz) is typically studied in young, normal-hearing individuals.
  • Older adults often have elevated hearing thresholds at conventional frequencies, necessitating research into their EHF hearing.

Purpose of the Study:

  • To measure EHF thresholds (8-18 kHz) in older adults (60-79 years).
  • To evaluate test-retest reliability, age, gender, and pre-existing hearing loss effects on EHF thresholds.
  • To determine the clinical applicability of EHF audiometry in older populations.

Main Methods:

  • 162 older adults (60-79 years) underwent EHF threshold measurements (8-18 kHz) using a high-frequency audiometer.
  • Thresholds were assessed twice within a single session to determine test-retest reliability.

Related Experiment Videos

  • Data were analyzed for effects of age, gender, and conventional hearing thresholds.

    • Main Results:

    • Older adults exhibited substantially higher EHF thresholds than younger counterparts, even those with normal conventional hearing.
    • Listeners with conventional hearing loss showed further elevated EHF thresholds.
    • Gender differences in EHF thresholds diminished when accounting for conventional hearing differences.
    • No significant age-group differences (60-69 vs. 70-79) were observed for EHF thresholds.
    • Test-retest reliability was within a clinically acceptable +/- 10 dB range.

    Conclusions:

    • EHF hearing sensitivity is reduced in older adults compared to younger individuals.
    • EHF audiometry is a reliable measure in older adults, including those with hearing loss.
    • Age and gender have minimal independent effects on EHF thresholds in older adults when conventional hearing is considered.