Document Detail

Chromatic Vasarely effect.
MedLine Citation:
PMID:  20619286     Owner:  NLM     Status:  In-Process    
Vasarely's 'nested-squares' illusion is the perception of a glowing "X" along the diagonals of concentric squares with a luminance gradient. We present here the chromatic Vasarely effect, where the concentric angles have a chromatic gradient, under iso-brightness conditions. The strength of the effect was tested psychophysically by two measures, the length and the color of the illusory folds. The color of the illusory fold is perceived as the complementary color of the color of the nested-squares (or angles). The experimental results show that a large repertoire of stimuli with different colors and angles yielded significantly perceived colors. The results show that the strength of the perceived illusory fold (of both the length and the chroma) is significantly larger at sharper angles of the stimuli. The chromatic first-order adaptation computational model predicts most of the above results.
Avital Tsofe; Yulia Yucht; Jenny Beyil; Shmuel Einav; Hedva Spitzer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-07-07
Journal Detail:
Title:  Vision research     Volume:  50     ISSN:  1878-5646     ISO Abbreviation:  Vision Res.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  2284-94     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, 69978 Tel-Aviv, Israel.
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