| The watercolor effect: spacing constraints. | |
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MedLine Citation:
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PMID: 19765603 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The watercolor effect (WCE) is a long-range color assimilation effect occurring within an area enclosed by a light chromatic contour, which in turn is surrounded by a dark chromatic contour. Here, we studied the effects of chromatic modulation of the WCE for different kinds of spacing between and within the inducing contours, using a hue-cancellation method. When an empty zone or interspace was inserted between the inducing contours (radial spacing), the hue shift required to null the induced coloration rapidly decreased with increasing spacing between the two contours. Similarly, when the continuous contours were replaced by dotted contours (lateral spacing), the shift in chromaticity quickly decreased with increasing distance between the dots. In this case, the decrease was similar for chains of paired dots ("in-phase") and chains of unpaired dots ("out-of-phase"). Results demonstrate that the WCE is strongest when the two inducing contours are spatially contiguous and continuous. The neural implications of these findings are discussed. |
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Authors:
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Fr?d?ric Devinck; Lothar Spillmann |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-09-16 |
Journal Detail:
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Title: Vision research Volume: 49 ISSN: 1878-5646 ISO Abbreviation: Vision Res. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-11-25 Completed Date: 2010-03-26 Revised Date: 2010-04-01 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 2911-7 Citation Subset: IM |
Affiliation:
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Laboratoire de Neurosciences Fonctionnelles et Pathologies, CNRS UMR 8160, CHRU Lille, H?pital Roger Salengro, Service EFV, 59037 Lille, France. frederic.devinck@uhb.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Color Perception / physiology* Form Perception / physiology* Humans Optical Illusions / physiology* Photic Stimulation / methods Psychophysics |
| Comments/Corrections | |
Erratum In:
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Vision Res. 2010 Apr 21;50(9):925 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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