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Related Experiment Videos

High-frequency hearing thresholds in young adults using a commercially available audiometer.

T Frank1

  • 1Department of Communication Disorders, Penn State University, University Park, Pennsylvania 16802.

Ear and Hearing
|December 1, 1990
PubMed
Summary

High-frequency hearing thresholds (10-20 kHz) in young adults showed significant variability between individuals, preventing the establishment of clinical norms. However, individual test-retest reliability was high, suggesting further research into intrasubject consistency.

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Area of Science:

  • Audiology
  • Hearing Science
  • Bioacoustics

Background:

  • High-frequency hearing assessment (10-20 kHz) is crucial for early detection of hearing loss.
  • Establishing normative hearing thresholds in young adults is essential for clinical audiology.
  • Previous research has focused on lower frequencies (0.25-8 kHz).

Purpose of the Study:

  • To determine test-retest reliability and intersubject variability of high-frequency hearing thresholds.
  • To assess the feasibility of establishing normative high-frequency audiometric values for clinical use.
  • To guide future research directions in high-frequency hearing assessment.

Main Methods:

  • Audiometric testing of high-frequency (10-20 kHz) hearing thresholds in 100 normally hearing young adults (18-28 years old).

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  • Utilized a Beltone 2000 audiometer with Sennheiser HD 250 earphones, calibrated using a Bruel and Kjaer flat-plate coupler.
  • Collected data from 200 ears, performing both initial testing and re-testing.

    • Main Results:

    • High-frequency hearing thresholds exhibited significant intersubject variability, precluding the recommendation of clinical normative values.
    • Test-retest thresholds for individual ears showed high reliability, with at least 95% of ears falling within a +/- 10 dB range.
    • No significant differences were found between initial test and re-test thresholds across all tested frequencies (p > 0.05).

    Conclusions:

    • Establishing intersubject normative thresholds for high-frequency hearing is not currently feasible due to high variability.
    • Intrasubject threshold reliability is clinically acceptable, supporting the validity of individual test results.
    • Future research should prioritize investigating intrasubject threshold reliability and variability over intersubject norms.