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II. Frequency Specificity

Alan J. Klein, PhD

Arch Otolaryngol. 1983;109(2):74-78.

Abstract
• Frequency specificity of a slow-wave response (SWR) of the brain-stem response (BSR) was measured with a simultaneous masking tuning-curve paradigm. The SWR tuning curves to 250-Hz tone pips show greatest sensitivity to 350- to 400-Hz maskers. The SWR tuning curves to 500-Hz tone pips are most sensitive to 500- and 600-Hz maskers. Higher-frequency tuning curves show greatest sensitivity when masker frequency is equal to signal frequency. Frequency specificity is preserved to 80-dB sound-pressure level or 55- to 65-dB sensation level. Tone-pip frequencies of 0.5, 1.0, 2.0, and 4.0 kHz appear to be adequate stimuli for eliciting a frequency-specific SWR. The 250-Hz tone pip does not elicit a frequencyspecific SWR and is probably not a useful test frequency under the present recording conditions.

(Arch Otolaryngol 1983;109:74-78)

Author Affiliations
From the Department of Otolaryngology, Medical University of South Carolina, Charleston. Dr Klein is now with the Department of Audiology and Speech Sciences, Purdue University, West Lafayette, Ind.

Footnotes
Accepted for publication July 9, 1982.

Portions of this article and the preceding article (Part I) were presented at the 102nd meeting of the Acoustical Society of America, Miami, Dec 3, 1981.

Reprint requests to the Department of Audiology and Speech Sciences, Purdue University, West Lafayette, IN 47907 (Dr Klein).

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