Document Detail

Perceptual asynchrony between color and motion with a single direction change.
MedLine Citation:
PMID:  17083289     Owner:  NLM     Status:  MEDLINE    
When a stimulus repeatedly and rapidly changes color (e.g., between red and green) and motion direction (e.g., upwards and downwards) with the same frequency, it was found that observers were most likely to pair colors and motion directions when the direction changes lead the color changes by approximately 80 ms. This is the color-motion asynchrony illusion. According to the differential processing time model, the illusion is explained because the neural activity leading to the perceptual experience of motion requires more time than that of color. Alternatively, the time marker model attributes the misbinding to a failure in matching different sorts of changes at rapid alternations. Here, running counter to the time marker model, we demonstrate that the illusion can arise with a single direction change. Using this simplified version of the illusion we also show that, although some form of visual masking takes place between colors, the measured asynchrony genuinely reflects processing time differences.
Daniel Linares; Joan López-Moliner
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2006-08-23
Journal Detail:
Title:  Journal of vision     Volume:  6     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2006  
Date Detail:
Created Date:  2006-11-06     Completed Date:  2006-12-01     Revised Date:  2008-04-29    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  974-81     Citation Subset:  IM    
Grup Recerca Neurociència Cognitiva, Parc Científic-Facultat de Psicologia, Universitat de Barcelona, Spain.
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MeSH Terms
Color Perception / physiology*
Models, Neurological
Motion Perception / physiology*
Optical Illusions / physiology*
Photic Stimulation / methods
Reaction Time
Time Perception / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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