Asynchronous processing in vision: Color leads motion

Arnold, Derek H., Clifford, Colin W. G. and Wenderoth, Peter (2001) Asynchronous processing in vision: Color leads motion. Current Biology, 11 8: 596-600. doi:10.1016/S0960-9822(01)00156-7


Author Arnold, Derek H.
Clifford, Colin W. G.
Wenderoth, Peter
Title Asynchronous processing in vision: Color leads motion
Journal name Current Biology   Check publisher's open access policy
ISSN 0960-9822
Publication date 2001
Sub-type Article (original research)
DOI 10.1016/S0960-9822(01)00156-7
Volume 11
Issue 8
Start page 596
End page 600
Total pages 5
Place of publication Cambridge
Publisher Cell Press
Language eng
Subject 1701 Psychology
1702 Cognitive Sciences
Abstract It has been demonstrated that subjects do not report changes in color and direction of motion as being co-incidental when they occur synchronously. Instead, for the changes to be reported as being synchronous, changes in direction of motion must precede changes in color. To explain this observation, some researchers have suggested that the neural processing of color and motion is asynchronous. This interpretation has been criticized on the basis that processing time may not correlate directly and invariantly with perceived time of occurrence. Here we examine this possibility by making use of the color-contingent motion aftereffect. By correlating color states disproportionately with two directions of motion, we produced and measured color-contingent motion aftereffects as a function of the range of physical correlations. The aftereffects observed are consistent with the perceptual correlation between color and motion being different from the physical correlation. These findings demonstrate asynchronous processing for different stimulus attributes, with color being processed more quickly than motion. This suggests that the time course of perceptual experience correlates directly with that of neural activity.
Keyword Biochemistry & Molecular Biology
Consciousness
Perception
Contingent
Segregation
Movement
Brain
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Psychology Publications
 
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Created: Wed, 17 Oct 2007, 10:47:21 EST