Document Detail

Grouping inhibits motion fading by giving rise to virtual trackable features.
MedLine Citation:
PMID:  17311479     Owner:  NLM     Status:  MEDLINE    
After prolonged viewing of a slowly drifting or rotating pattern under strict fixation, the pattern appears to slow down and then momentarily stop. The authors show that grouping can slow down the process of "motion fading," suggesting that cortical configural form analysis interacts with the computation of motion signals during motion fading. The authors determined that grouping slows motion fading because it can give rise to trackable features, such as virtual contour terminators not present in the image, that possess stronger motion signals than would occur in the absence of such trackable features. That a continuously rotating stimulus will eventually be perceived to stop, despite the presence of such trackable features, suggests that the motion-from-form system itself can be fatigued. The finding that stationary form can remain visible even after the motion signal has faded suggests that the neural bases of motion visibility and form visibility arise from different neuronal populations.
P-J Hsieh; P U Tse
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  33     ISSN:  0096-1523     ISO Abbreviation:  J Exp Psychol Hum Percept Perform     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-02-21     Completed Date:  2007-03-30     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  United States    
Other Details:
Languages:  eng     Pagination:  57-63     Citation Subset:  IM    
Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH 03755, USA.
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MeSH Terms
Attention* / physiology
Awareness / physiology
Cerebral Cortex / physiology
Discrimination Learning* / physiology
Eye Movements / physiology
Inhibition (Psychology)*
Motion Perception* / physiology
Neurons / physiology
Optical Illusions* / physiology
Pattern Recognition, Visual* / physiology
Psychomotor Performance / physiology
Reaction Time / physiology
Grant Support
R03 MH0609660-01/MH/NIMH NIH HHS

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

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