Document Detail

Illusory color mixing upon perceptual fading and filling-in does not result in 'forbidden colors'.
MedLine Citation:
PMID:  16469353     Owner:  NLM     Status:  MEDLINE    
A retinally stabilized object readily undergoes perceptual fading. It is commonly believed that the color of the apparently vanished object is filled in with the color of the background because the features of the filled-in area are determined by features located outside the stabilized boundary. Crane, H. D., & Piantanida, T. P. (1983) (On seeing reddish green and yellowish blue. Science, 221, 1078-1080) reported that the colors that are perceived upon full or partial perceptual fading can be 'forbidden' in the sense that they violate color opponency theory. For example, they claimed that their subjects could perceive "reddish greens" and "yellowish blues." Here we use visual stimuli composed of spatially alternating stripes of two different colors to investigate the characteristics of color mixing during perceptual filling-in, and to determine whether 'forbidden colors' really occur. Our results show that (1) the filled-in color is not solely determined by the background color, but can be the mixture of the background and the foreground color; (2) apparent color mixing can occur even when the two colors are presented to different eyes, implying that color mixing during filling-in is in part a cortical phenomenon; and (3) perceived colors are not 'forbidden colors' at all, but rather intermediate colors.
P-J Hsieh; P U Tse
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2006-02-15
Journal Detail:
Title:  Vision research     Volume:  46     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-03-21     Completed Date:  2006-08-21     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  2251-8     Citation Subset:  IM    
Department of Psychological and Brain Sciences, Moore Hall, Dartmouth College, Hanover, NH 03755, USA.
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MeSH Terms
Color Perception / physiology*
Color Perception Tests / methods
Optical Illusions / physiology*
Perceptual Closure / physiology*
Photic Stimulation / methods
Vision, Binocular / physiology
Grant Support
R03 MH0609660-01/MH/NIMH NIH HHS

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