| Temporal aspects of suppression in distortion-product otoacoustic emissions. | |
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MedLine Citation:
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PMID: 21568411 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examined the time course of cochlear suppression using a tone-burst suppressor to measure decrement of distortion-product otoacoustic emissions (DPOAEs). Seven normal-hearing subjects with ages ranging from 19 to 28 yr participated in the study. Each subject had audiometric thresholds ≤ 15 dB HL [re ANSI (2004) Specifications for Audiometers] for standard octave and inter-octave frequencies from 0.25 to 8 kHz. DPOAEs were elicited by primary tones with f(2) = 4.0 kHz and f(1) = 3.333 kHz (f(2)/f(1) = 1.2). For the f(2), L(2) combination, suppression was measured for three suppressor frequencies: One suppressor below f(2) (3.834 kHz) and two above f(2) (4.166 and 4.282 kHz) at three levels (55, 60, and 65 dB SPL). DPOAE decrement as a function of L(3) for the tone-burst suppressor was similar to decrements obtained with longer duration suppressors. Onset- and setoff- latencies were ≤ 4 ms, in agreement with previous physiological findings in auditory-nerve fiber studies that suggest suppression results from a nearly instantaneous compression of the waveform. Persistence of suppression was absent for the below-frequency suppressor (f(3) = 3.834 kHz) and was ≤ 3 ms for the two above-frequency suppressors (f(3) = 4.166 and 4.282 kHz). |
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Authors:
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Joyce Rodriguez; Stephen T Neely |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 129 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-05-16 Completed Date: 2011-09-12 Revised Date: 2012-05-01 |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 3082-9 Citation Subset: IM |
Affiliation:
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Starkey Hearing Research Center, 2150 Shattuck Avenue, Suite 408, Berkeley, California 94704, USA. joyce_rodriguez@starkey.com |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Cochlea / physiology*, ultrastructure Female Humans Male Otoacoustic Emissions, Spontaneous / physiology* Perceptual Distortion / physiology* Perceptual Masking / physiology* Psychoacoustics Reaction Time / physiology Time Factors Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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P30 DC4662/DC/NIDCD NIH HHS; R01DC8318/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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