Frequency-specific auditory brainstem responses relationship to behavioural thresholds in cochlear-impaired adults

G. M. Munnerley, K. Anne Greville*, Suzanne C. Purdy, W. J. Keith

*Corresponding author for this work

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Auditory brainstem response (ABR) thresholds to ipsilaterally masked tone pip stimuli were obtained from three groups of hearing-impaired subjects. Using high-pass (for 500-Hz tone pips) and notched noise (for 1-, 2- and 4-kHz tone pips), ABR thresholds in subjects with low-frequency, high-frequency or flat cochlear hearing losses were compared to conventional pure-tone audiometric thresholds. A strong positive relationship was found between ABR and behavioural threshold elevation. Absolute ABR thresholds at 500 Hz were significantly higher than those at other frequencies. The results of this study indicate that frequency-specific ABR testing can provide an approximation of both degree and configuration of cochlear hearing losses in adults. Further refinements of testing and judging procedures are needed however to reduce the variation evident in our results and thus achieve the accuracy required for most clinical applications.

Original languageEnglish
Pages (from-to)25-32
Number of pages8
JournalInternational Journal of Audiology
Volume30
Issue number1
DOIs
Publication statusPublished - 1991

Keywords

  • ABR
  • Cochlear hearing loss
  • Frequency specificity
  • Notched noise
  • Tone pips

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