Document Detail

Discrimination of interaural envelope correlation and its relation to binaural unmasking at high frequencies.
MedLine Citation:
PMID:  1737879     Owner:  NLM     Status:  MEDLINE    
Listeners' sensitivity to interaural correlation of the envelope of high-frequency waveforms and whether such sensitivity might account for detectability in a masking-level difference paradigm were assessed. Thresholds of interaural envelope decorrelation (from a reference correlation of 1.0) were measured for bands of noise centered at 4 kHz and bandwidths ranging from 50-1600 Hz. Decorrelation of the envelope was achieved by "mixing" two independent narrow-band noises. Separately, with the same listeners, NoSo and NoS pi detection thresholds were measured for maskers of the same center frequency and bandwidths. For bandwidths of noise up to about 400 Hz, listeners were similarly sensitive to interaural decorrelation in both types of task. However, for bandwidths greater than 400 Hz or so, while sensitivity in the discrimination task was unaffected, sensitivity was reduced in the NoS pi conditions. Additional data suggested that listeners were able to maintain their sensitivity independent of bandwidth in the discrimination task by focusing on binaural information within select spectral regions of the stimuli.
L R Bernstein; C Trahiotis
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  91     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  1992 Jan 
Date Detail:
Created Date:  1992-03-17     Completed Date:  1992-03-17     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  306-16     Citation Subset:  IM    
Center for Neurological Sciences, Surgical Research Center, University of Connecticut Health Center, Farmington 06030.
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MeSH Terms
Acoustic Stimulation
Auditory Threshold / physiology*
Hearing / physiology*
Perceptual Masking*
Grant Support

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

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