Document Detail

Psychophysical frequency resolution in the cat as determined by simultaneous masking and its relation to auditory-nerve resolution.
MedLine Citation:
PMID:  521557     Owner:  NLM     Status:  MEDLINE    
Critical bandwidths were measured behaviorally at 1 and 2 kHz by simultaneous masking in four cats. Three methods were used. They were (i) the masking of a tone by noise of variable bandwidth, (ii) the masking of a narrow-band signal by two tones, and (iii) the masking of a tone by noise of rippled spectrum. The three methods agreed closely and gave a mean critical bandwidth of 410 Hz at 1 kHz and 690 Hz at 2 kHz. These values were about three times as great as the electrophysiologically-determined effective bandwidths of single fibers of the auditory nerve at the same frequencies, both as measured in other animals, and in one of the animals that had been tested behaviorally as well. Psychophysical tuning curves were also determined behaviorally; in contrast, they agreed closely with auditory-nerve fibers in both bandwidth and slope. The results suggest that the critical band as measured by simultaneous masking is not a close relation of the frequency-threshold curve of auditory-nerve fibers, but that the psychophysical tuning curve possibly may be. Possible reasons and implications are discussed.
J O Pickles
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  66     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  1979 Dec 
Date Detail:
Created Date:  1980-03-27     Completed Date:  1980-03-27     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:  1725-32     Citation Subset:  IM    
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MeSH Terms
Auditory Threshold / physiology*
False Positive Reactions
Perceptual Masking*
Vestibulocochlear Nerve / physiology*

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

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