Portable stimulus generator for obtaining high-frequency (8-14 kHz) auditory brainstem responses.

S. A. Fausti, R. H. Frey, J. A. Henry, P. G. Robertson, R. S. Hertert

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Currently, the most useful application of high-frequency (greater than or equal to 8 kHz) auditory evaluation is for serial monitoring of patients receiving potentially ototoxic agents. Many individuals, however, are unable to respond to behavioral auditory test techniques. An objective evaluation method such as the auditory brainstem response (ABR) is valuable with difficult-to-test individuals. Laboratory instrumentation has been demonstrated to evoke high-frequency-specific (8-14 kHz) ABRs with reliable intrasubject latencies over time. This instrumentation is limited, however, because it cannot be transported to the patient confined to a hospital room. A portable device has now been constructed to deliver high-frequency (8-14 kHz) tone-burst stimuli comparable to the lab system. This digital/analog high-frequency tone-burst stimulus generator weighs less than 5 pounds. It can be utilized with any ABR signal averager capable of generating a positive (condensing) click at approximately 4.8 volts. Case studies are presented to demonstrate the frequency-specific responses obtained with these high-frequency tone-burst stimuli.

Original languageEnglish (US)
Pages (from-to)166-175
Number of pages10
JournalJournal of the American Academy of Audiology
Volume3
Issue number3
StatePublished - May 1 1992

ASJC Scopus subject areas

  • Speech and Hearing

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