Document Detail

Eye movements and neural remapping during fusion of misaligned random-dot stereograms.
MedLine Citation:
PMID:  6663369     Owner:  NLM     Status:  MEDLINE    
Fender and Julesz [J. Opt. Soc. Am. 57, 819 (1967)] found that fused retinally stabilized binocular line targets could be misaligned on the two retinas in the temporalward direction by at least 30 min of arc without loss of fusion and stereopsis and that random-dot stereograms could be misaligned 2 deg before fusion was lost. To test these results in normal vision, we recorded eye motions of four observers while they viewed a random-dot stereogram that subtended about 10 deg. The observers misaligned overlaid vectograph stereo images by moving them apart in a temporalward direction until fusion was lost. They then returned the vectographs to the overlaid position. Throughout this cycle the observers reported at frequent intervals if they could perceive strong or weak depth, loss of depth, or loss of fusion. For some observers the image separation could be increased to 5 deg beyond parallel before fusion was lost. The visual axes diverged to follow the image centers and varied from overconverged to overdiverged with respect to the image centers while the observers still reported depth and fusion. We call the difference between the image separation and eye vergence the vergence error. If a vergence error persisted for at least 10 sec without loss of the percepts of fusion and depth, we postulate that neutral remapping occurred that compensated for the retinal misalignment. We found that the average maximum neural remapping was 3.0 deg.(ABSTRACT TRUNCATED AT 250 WORDS)
M T Hyson; B Julesz; D H Fender
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America     Volume:  73     ISSN:  0030-3941     ISO Abbreviation:  J Opt Soc Am     Publication Date:  1983 Dec 
Date Detail:
Created Date:  1984-03-14     Completed Date:  1984-03-14     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7503097     Medline TA:  J Opt Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1665-73     Citation Subset:  IM; S    
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MeSH Terms
Depth Perception / physiology*
Eye Movements*
Retina / physiology*
Vision Tests / instrumentation,  methods
Grant Support

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

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