| Reference frames in early motion detection. | |
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MedLine Citation:
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PMID: 15831073 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To perceive the real motion of objects in the world while moving the eyes, retinal motion signals must be compensated by information about eye movements. Here we study when this compensation takes place in the course of visual processing, and whether uncompensated motion signals are ever available. We used a paradigm based on asymmetry in motion detection: Fast-moving objects are found easier among slow-moving distractors than are slow objects among fast distractors. By coupling object motion to eye motion, we created stimuli that moved fast on the retina but slowly in an eye-independent reference frame, or vice versa. In the 100 ms after stimulus onset, motion detection is dominated by retinal motion, uncompensated for eye movements. As early as 130 ms, compensated signals become available: objects that move slowly on the retina but fast in an eye-independent frame are detected as easily as those that move fast on the retina. |
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Authors:
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Camille Morvan; Mark Wexler |
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Publication Detail:
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Type: Journal Article Date: 2005-02-23 |
Journal Detail:
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Title: Journal of vision Volume: 5 ISSN: 1534-7362 ISO Abbreviation: J Vis Publication Date: 2005 |
Date Detail:
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Created Date: 2005-04-15 Completed Date: 2006-01-17 Revised Date: 2008-04-29 |
Medline Journal Info:
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Nlm Unique ID: 101147197 Medline TA: J Vis Country: United States |
Other Details:
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Languages: eng Pagination: 131-8 Citation Subset: IM |
Affiliation:
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LPPA, CNRS, Collège de France, Paris, France. camille.morvan@college-de-france.fr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Fixation, Ocular / physiology* Humans Male Motion Perception / physiology* Pursuit, Smooth / physiology* Retina / physiology* Space Perception / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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