Document Detail

Surface decomposition accompanying the perception of transparency.
MedLine Citation:
PMID:  8347552     Owner:  NLM     Status:  MEDLINE    
At the retina, each location can have only one value of luminance or color. When transparency is perceived, however, different surface qualities can be redistributed to two or more apparently superimposed layers. The experiments described here explored the characteristics of this surface decomposition. It is shown that the surface decomposition occurs rapidly, it affects even early stages of visual processing, and it involves attributes such as texture and motion as well as color and brightness. In the first experiment, the recognition advantage for transparent overlapping digits demonstrated that the surface decomposition accompanying transparency occurs within 60 ms. In the second, the separation of overlying orthogonal grids due to surface decomposition was found to influence the strength of the McCollough effect, an effect attributed to early cortical processing. Finally, when a transparent surface appears to extend over areas that are physically identical to the background, qualities of the transparent overlay such as texture and motion, as well as color or brightness (e.g., the neon color effect) appear to spread to the illusory overlay.
T Watanabe; P Cavanagh
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Spatial vision     Volume:  7     ISSN:  0169-1015     ISO Abbreviation:  Spat Vis     Publication Date:  1993  
Date Detail:
Created Date:  1993-09-16     Completed Date:  1993-09-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8602662     Medline TA:  Spat Vis     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  95-111     Citation Subset:  IM    
Department of Psychology, Harvard University, Cambridge, MA.
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MeSH Terms
Color Perception / physiology*
Form Perception / physiology*
Motion Perception / physiology

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