Document Detail

Motion-induced blindness and microsaccades: cause and effect.
MedLine Citation:
PMID:  21172899     Owner:  NLM     Status:  MEDLINE    
It has been suggested that subjective disappearance of visual stimuli results from a spontaneous reduction of microsaccade rate causing image stabilization, enhanced adaptation, and a consequent fading. In motion-induced blindness (MIB), salient visual targets disappear intermittently when surrounded by a moving pattern. We investigated whether changes in microsaccade rate can account for MIB. We first determined that the moving mask does not affect microsaccade metrics (rate, magnitude, and temporal distribution). We then compared the dynamics of microsaccades during reported illusory disappearance (MIB) and physical disappearance (Replay) of a salient peripheral target. We found large modulations of microsaccade rate following perceptual transitions, whether illusory (MIB) or real (Replay). For MIB, the rate also decreased prior to disappearance and increased prior to reappearance. Importantly, MIB persisted in the presence of microsaccades although sustained microsaccade rate was lower during invisible than visible periods. These results suggest that the microsaccade system reacts to changes in visibility, but microsaccades also modulate MIB. The latter modulation is well described by a Poisson model of the perceptual transitions assuming that the probability for reappearance and disappearance is modulated following a microsaccade. Our results show that microsaccades counteract disappearance but are neither necessary nor sufficient to account for MIB.
Yoram S Bonneh; Tobias H Donner; Dov Sagi; Moshe Fried; Alexander Cooperman; David J Heeger; Amos Arieli
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-12-20
Journal Detail:
Title:  Journal of vision     Volume:  10     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2010  
Date Detail:
Created Date:  2010-12-21     Completed Date:  2011-04-07     Revised Date:  2014-09-15    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  22     Citation Subset:  IM    
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MeSH Terms
Contrast Sensitivity / physiology
Figural Aftereffect / physiology
Middle Aged
Models, Neurological
Motion Perception / physiology*
Optical Illusions / physiology*
Photic Stimulation / methods
Poisson Distribution
Reaction Time / physiology
Saccades / physiology*
Space Perception / physiology*
Grant Support
R01 EY016752/EY/NEI NIH HHS; R01 EY016752-05/EY/NEI NIH HHS; R01 EY016752-05S1/EY/NEI NIH HHS; R0I-EY016752/EY/NEI NIH HHS

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