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Related Experiment Videos

Behavioural tests: applications and limitations in comparison with brainstem response audiometry.

A Hirsch1

  • 1Department of Audiology, Karolinska Hospital, Stockholm, Sweden.

Acta Oto-Laryngologica. Supplementum
|January 1, 1991
PubMed
Summary

Brainstem response audiometry (BRA) is a reliable hearing test for young children when behavioral tests are inconclusive. BRA thresholds accurately reflect later behavioral hearing test results, even in children with developmental delays.

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Area of Science:

  • Audiology
  • Pediatric audiology
  • Neuroscience

Background:

  • Traditional behavioral hearing tests are unreliable in children under 8 months developmental age.
  • Informal hearing tests lack specific stimuli and do not provide accurate threshold levels.
  • Assessing hearing in children with developmental delays or behavioral disturbances presents unique challenges.

Purpose of the Study:

  • To evaluate the efficacy of Brainstem Response Audiometry (BRA) in assessing hearing thresholds in young children.
  • To compare BRA results with later behavioral hearing test outcomes.
  • To determine the utility of BRA in cases where informal hearing tests are unclear.

Main Methods:

  • Brainstem Response Audiometry (BRA) was conducted on 47 children (23 normal, 24 with mental retardation).

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  • BRA was performed on children with unclear informal test results.
  • Follow-up behavioral hearing tests were administered 1 to 10 years post-BRA.

    • Main Results:

    • BRA thresholds consistently indicated hearing function comparable to or worse than later behavioral tests.
    • No cases showed BRA thresholds suggesting better hearing than subsequent behavioral assessments.
    • Five normal-hearing children with otitis media exhibited high BRA thresholds (up to 75 dB nHL).

    Conclusions:

    • Brainstem Response Audiometry (BRA) is a valuable tool for pediatric hearing assessment, especially when behavioral methods are limited.
    • BRA results provide reliable long-term indicators of hearing function in children.
    • BRA can be effectively used in children with developmental delays and behavioral disturbances.