Document Detail

Growth of suppression in humans based on distortion-product otoacoustic emission measurements.
MedLine Citation:
PMID:  21361439     Owner:  NLM     Status:  MEDLINE    
Distortion-product otoacoustic emissions (DPOAEs) were used to describe suppression growth in normal-hearing humans. Data were collected at eight f(2) frequencies ranging from 0.5 to 8 kHz for L(2) levels ranging from 10 to 60 dB sensation level. For each f(2) and L(2) combination, suppression was measured for nine or eleven suppressor frequencies (f(3)) whose levels varied from -20 to 85 dB sound pressure level (SPL). Suppression grew nearly linearly when f(3) ≈ f(2), grew more rapidly for f(3) < f(2), and grew more slowly for f(3) > f(2). These results are consistent with physiological and mechanical data from lower animals, as well as previous DPOAE data from humans, although no previous DPOAE study has described suppression growth for as wide a range of frequencies and levels. These trends were evident for all f(2) and L(2) combinations; however, some exceptions were noted. Specifically, suppression growth rate was less steep as a function of f(3) for f(2) frequencies ≤ 1 kHz. Thus, despite the qualitative similarities across frequency, there were quantitative differences related to f(2), suggesting that there may be subtle differences in suppression for frequencies above 1 kHz compared to frequencies below 1 kHz.
Michael P Gorga; Stephen T Neely; Judy Kopun; Hongyang Tan
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  129     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-03-02     Completed Date:  2011-06-20     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  801-6     Citation Subset:  IM    
Boys Town National Research Hospital, 555 North 30th Street, Omaha, Nebraska 68131, USA.
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MeSH Terms
Acoustic Stimulation
Audiometry, Pure-Tone
Auditory Perception*
Auditory Threshold
Cochlea / physiology*
Linear Models
Middle Aged
Noise / adverse effects
Otoacoustic Emissions, Spontaneous*
Perceptual Distortion*
Perceptual Masking
Sound Spectrography
Young Adult
Grant Support
NIDCD R01 2251//PHS HHS; P30 4662//PHS HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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