Document Detail

Perception of circular heading from optical flow.
MedLine Citation:
PMID:  1826318     Owner:  NLM     Status:  MEDLINE    
Observers viewed random-dot optical flow displays that simulated self-motion on a circular path and judged whether they would pass to the right or left of a target at 16 m. Two dots in two frames are theoretically sufficient to specify circular heading if the orientation of the rotation axis is known. Heading accuracies were better than 1.5 degrees with a ground surface, wall surface, and 3D cloud of dots, and were constant over densities down to 2 dots, consistent with the theory. However, there was an inverse relation between the radius of the observer's path and constant heading error, such that at small radii observers reported heading 3 degrees to the outside of the actual path with the ground and to the inside with the wall and cloud. This may be an artifact of a small display screen.
W H Warren; D R Mestre; A W Blackwell; M W Morris
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  17     ISSN:  0096-1523     ISO Abbreviation:  J Exp Psychol Hum Percept Perform     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-05-07     Completed Date:  1991-05-07     Revised Date:  2013-02-11    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  28-43     Citation Subset:  IM    
Department of Psychology, Brown University, Providence, Rhode Island 02912.
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MeSH Terms
Eye Movements
Motion Perception*
Sensory Thresholds
Social Environment*
Grant Support

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