Document Detail

In pursuit of perspective: does vertical perspective disambiguate depth from motion parallax?
MedLine Citation:
PMID:  24422245     Owner:  NLM     Status:  MEDLINE    
Motion parallax provides a dynamic, unambiguous, monocular visual depth cue. However, the lateral image motion in computer-generated motion parallax displays is depth-sign ambiguous. While mounting evidence indicates that the visual system uses an extra-retinal signal from the pursuit system to disambiguate depth, vertical perspective is a potential confound because it co-varies with the stimulus translation that produces the pursuit signal. Here the role of an extra-retinal pursuit signal and the role of vertical perspective in disambiguating depth from motion parallax were investigated. Through the careful isolation of each cue, the results indicate that observers have excellent depth discrimination with an extra-retinal pursuit cue alone, but have poor discrimination with vertical perspective alone. The conclusion is that vertical perspective does not play a role in the disambiguation of depth in small computer-generated motion parallax displays.
Jonathon M George; Joshua I Johnson; Mark Nawrot
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Perception     Volume:  42     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  2013  
Date Detail:
Created Date:  2014-01-15     Completed Date:  2014-02-04     Revised Date:  2014-06-20    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  England    
Other Details:
Languages:  eng     Pagination:  631-41     Citation Subset:  IM    
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MeSH Terms
Depth Perception*
Discrimination (Psychology)
Motion Perception*
Pattern Recognition, Visual*
Pursuit, Smooth
Vision, Monocular*
Visual Fields
Grant Support

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

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