Document Detail


Tracking objects that move where they are headed.
MedLine Citation:
PMID:  21769535     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Previous work has demonstrated that the ability to keep track of moving objects is improved when the objects have unique visual features, such as color or shape. In the present study, we investigated how orientation information is used during the tracking of objects. Orientation is an interesting feature to explore in moving objects because it is directional and is often informative of the direction of motion. Most objects move forward, in the direction they are oriented. In the present experiments, participants tracked a subset of moving isosceles triangles whose orientations were constant, related, or unrelated to the direction of motion. In the standard multiple object tracking (MOT) task, tracking performance improved when orientations were unique and remained constant, but not when orientation and direction of motion were aligned. In the target recovery task, in which MOT was interrupted by a brief blanking of the display, performance did improve when orientation and direction were aligned. In the final experiment, results showed that orientation was not used before the blank to predict future target locations, but was instead used after the blank. We concluded that people use orientation to compare a stored representation to target position for recovery of lost targets.
Authors:
Nicole L Jardine; Adriane E Seiffert
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-16
Journal Detail:
Title:  Attention, perception & psychophysics     Volume:  -     ISSN:  1943-393X     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101495384     Medline TA:  Atten Percept Psychophys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Psychology, Vanderbilt University, Nashville, TN, 37240, USA, n.jardine@vanderbilt.edu.
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