Document Detail


The effects of a high-frequency suppressor on tuning curves and derived basilar-membrane response functions.
MedLine Citation:
PMID:  12880044     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Forward-masked psychophysical tuning curves were obtained using a fixed, low-level signal at a frequency of 4 kHz, and masker frequencies of 2.0, 2.5, 3.0, 3.5, 3.75, 4.0, 4.25, 4.5, 4.75, 5.0, and 5.5 kHz, at masker-signal gaps of 20, 30, 40, 60, 80, and 100 ms. An adaptive two-interval, two alternative forced-choice (21-2AFC) procedure was used to obtain the masker level at threshold. This procedure was repeated with the addition of a 4.75-kHz suppressor at 50 or 60 dB SPL, gated with the masker. Tuning curves were broader, and estimates of compression and gain from derived input/output functions were decreased in the presence of a suppressor as compared to the no-suppressor condition. The results are consistent with physiological results, which show that suppression leads to a broadening of tuning curves and a partial linearization of the midlevel portion of the basilar-membrane input/output function.
Authors:
Ifat Yasin; Christopher J Plack
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  114     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-07-25     Completed Date:  2003-09-26     Revised Date:  2006-12-27    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  322-32     Citation Subset:  IM    
Affiliation:
Department of Psychology, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, England. iyasin@essex.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Acoustic Stimulation
Adult
Attention / physiology*
Auditory Threshold / physiology
Basilar Membrane / physiology*
Humans
Linear Models
Loudness Perception / physiology*
Perceptual Masking / physiology*
Pitch Discrimination / physiology*
Psychoacoustics
Sound Spectrography

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


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