Document Detail

The barberplaid illusion: plaid motion is biased by elongated apertures.
MedLine Citation:
PMID:  8917769     Owner:  NLM     Status:  MEDLINE    
The perceived direction of motion of plaids windowed by elongated spatial Gaussians is biased toward the window's long axis. The bias increases as the relative angle between the plaid motion and the long axis of the window increases, peaks at a relative angle of approximately 45 deg, and then decreases. The bias increases as the window is made narrower (at fixed height) and decreases as the component spatial frequency increases (at fixed aperture size). We examine several models of human motion processing (cross-correlation, motion-energy, intersection-of-constraints, and vector-sum), and show that none of these standard models can predict our data. We conclude that spatial integration of motion signals plays a crucial role in plaid motion perception and that current models must be explicitly expanded to include such spatial interactions.
B R Beutter; J B Mulligan; L S Stone
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  36     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1996 Oct 
Date Detail:
Created Date:  1996-12-11     Completed Date:  1996-12-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  3061-75     Citation Subset:  IM; S    
Human and Systems Techologies Branch, NASA Ames Research Center, Moffett Field CA 94035-1000, USA.
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MeSH Terms
Models, Neurological
Motion Perception / physiology*
Optical Illusions / physiology*
Pattern Recognition, Visual / physiology*
Time Factors
Visual Fields
L S Stone / ARC

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

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