Document Detail

Three-dimensional motion aftereffects reveal distinct direction-selective mechanisms for binocular processing of motion through depth.
MedLine Citation:
PMID:  21945967     Owner:  NLM     Status:  MEDLINE    
Motion aftereffects are historically considered evidence for neuronal populations tuned to specific directions of motion. Despite a wealth of motion aftereffect studies investigating 2D (frontoparallel) motion mechanisms, there is a remarkable dearth of psychophysical evidence for neuronal populations selective for the direction of motion through depth (i.e., tuned to 3D motion). We compared the effects of prolonged viewing of unidirectional motion under dichoptic and monocular conditions and found large 3D motion aftereffects that could not be explained by simple inheritance of 2D monocular aftereffects. These results (1) demonstrate the existence of neurons tuned to 3D motion as distinct from monocular 2D mechanisms, (2) show that distinct 3D direction selectivity arises from both interocular velocity differences and changing disparities over time, and (3) provide a straightforward psychophysical tool for further probing 3D motion mechanisms.
Thaddeus B Czuba; Bas Rokers; Kyle Guillet; Alexander C Huk; Lawrence K Cormack
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2011-09-26
Journal Detail:
Title:  Journal of vision     Volume:  11     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2011  
Date Detail:
Created Date:  2011-09-28     Completed Date:  2012-01-31     Revised Date:  2014-07-10    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  18     Citation Subset:  IM    
Copyright Information:
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MeSH Terms
Depth Perception / physiology*
Middle Aged
Motion Perception / physiology*
Photic Stimulation / methods
Vision Disparity*
Vision, Binocular / physiology*
Grant Support
R01 EY017366/EY/NEI NIH HHS; R01 EY020592/EY/NEI NIH HHS; R01-EY017366/EY/NEI NIH HHS

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