| Weber-Fechner behavior in symmetry perception? | |
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MedLine Citation:
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PMID: 20952783 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The literature contains several allusions to the idea that detection of (mirror) symmetry in the presence of noise follows the Weber-Fechner law. This law usually applies to first-order structures, such as length, weight, or pitch, and it holds that just-noticeable differences in a signal vary in proportion to the strength of the signal. Symmetry, however, is a higher order structure, and this theoretical note starts from the idea that, in noisy symmetry, the regularity-to-noise ratio defines the strength of the signal to be considered. We argue that the detectability of the symmetry follows a psychophysical law that also holds for Glass patterns. This law deviates from the Weber-Fechner law in that it implies that, in the middle range of noise proportions, the sensitivity to variations in the regularity-to-noise ratio is disproportionally higher than in both outer ranges. |
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Authors:
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Peter A van der Helm |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Attention, perception, & psychophysics Volume: 72 ISSN: 1943-393X ISO Abbreviation: Atten Percept Psychophys Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-10-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101495384 Medline TA: Atten Percept Psychophys Country: United States |
Other Details:
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Languages: eng Pagination: 1854-64 Citation Subset: IM |
Affiliation:
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Donders Institute for Brain, Cognition, and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands. p.vanderhelm@donders.ru.nl |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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