Document Detail

Coherent motion pops out during smooth pursuit.
MedLine Citation:
PMID:  12151794     Owner:  NLM     Status:  MEDLINE    
Stimulus motion is a prominent feature that is used by the visual system to segment figure from ground and perceptually bind widely separated objects. Pursuit eye movements can be influenced by such perceptual grouping processes. We have examined the subjects' ability to detect small amounts of coherent motion in random dot kinematograms during pursuit. We compared performance on tests of coherent motion perception while subjects fixated a stationary spot or while they tracked a moving target. The results indicate that smooth pursuit can improve subjects' ability to detect the presence of coherent motion. We tentatively propose that an efference copy of the eye movement signal can enhance the ability of the visual system to detect correlations between sparsely placed targets among noisy distractors.
Mark W Greenlee; Mark M Schira; Hubert Kimmig
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuroreport     Volume:  13     ISSN:  0959-4965     ISO Abbreviation:  Neuroreport     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-08-01     Completed Date:  2002-09-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9100935     Medline TA:  Neuroreport     Country:  England    
Other Details:
Languages:  eng     Pagination:  1313-6     Citation Subset:  IM    
Institute of Cognitive Science, University of Oldenburg, Ammerländer Heerstrasse 114, 26111 Oldenburg, Germany.
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MeSH Terms
Fixation, Ocular / physiology
Motion Perception / physiology*
Photic Stimulation
Pursuit, Smooth / physiology*
Saccades / physiology

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