Document Detail


Tracking planets and moons: mechanisms of object tracking revealed with a new paradigm.
MedLine Citation:
PMID:  21264704     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
People can attend to and track multiple moving objects over time. Cognitive theories of this ability emphasize location information and differ on the importance of motion information. Results from several experiments have shown that increasing object speed impairs performance, although speed was confounded with other properties such as proximity of objects to one another. Here, we introduce a new paradigm to study multiple object tracking in which object speed and object proximity were manipulated independently. Like the motion of a planet and moon, each target-distractor pair rotated about both a common local point as well as the center of the screen. Tracking performance was strongly affected by object speed even when proximity was controlled. Additional results suggest that two different mechanisms are used in object tracking--one sensitive to speed and proximity and the other sensitive to the number of distractors. These observations support models of object tracking that include information about object motion and reject models that use location alone.
Authors:
Michael Tombu; Adriane E Seiffert
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Attention, perception & psychophysics     Volume:  73     ISSN:  1943-393X     ISO Abbreviation:  Atten Percept Psychophys     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-03-25     Completed Date:  2011-08-15     Revised Date:  2014-09-02    
Medline Journal Info:
Nlm Unique ID:  101495384     Medline TA:  Atten Percept Psychophys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  738-50     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Acceleration
Adult
Attention*
Distance Perception
Female
Humans
Male
Moon*
Motion Perception*
Orientation
Pattern Recognition, Visual*
Planets*
Psychophysics
Grant Support
ID/Acronym/Agency:
EY014984/EY/NEI NIH HHS; R01 EY014984/EY/NEI NIH HHS
Comments/Corrections

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


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