| Implicit versus explicit frequency comparisons: Two mechanisms of auditory change detection. | |
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MedLine Citation:
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PMID: 20854002 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Listeners had to compare, with respect to pitch (frequency), a pure tone (T) to a combination of pure tones presented subsequently (C). The elements of C were either synchronous, and therefore difficult to hear out individually, or asynchronous and therefore easier to hear out individually. In the "present/absent" condition, listeners had to judge if T reappeared in C or not. In the "up/down" condition, the task was to judge if the element of C most similar to T was higher or lower than T. When the elements of C were synchronous, the up/down task was found to be easier than the present/absent task; the converse result was obtained when the elements of C were asynchronous. This provides evidence for a duality of auditory comparisons between tone frequencies: (1) implicit comparisons made by automatic and direction-sensitive "frequency-shift detectors"; (2) explicit comparisons more sensitive to the magnitude of a frequency change than to its direction. Another experiment suggests that although the frequency-shift detectors cannot compare effectively two tones separated by an interfering tone, they are largely insensitive to interfering noise bursts. (PsycINFO Database Record (c) 2011 APA, all rights reserved). |
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Authors:
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Laurent Demany; Catherine Semal; Daniel Pressnitzer |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of experimental psychology. Human perception and performance Volume: 37 ISSN: 1939-1277 ISO Abbreviation: J Exp Psychol Hum Percept Perform Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-05 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7502589 Medline TA: J Exp Psychol Hum Percept Perform Country: United States |
Other Details:
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Languages: eng Pagination: 597-605 Citation Subset: IM |
Affiliation:
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Universite de Bordeaux. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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