| Collisions between moving visual targets: what controls alternative ways of seeing an ambiguous display? | |
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MedLine Citation:
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PMID: 10664783 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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When identical visual targets move directly toward and then past one another, they appear either to stream past one another or to bounce off each other. Bertenthal et al (1993 Perception 22 193-207) accounted for the relative strengths of these two percepts by invoking a directional bias, arising from cooperative interactions within a network of motion detectors. We tested this explanation by devising conditions that would enhance or diminish the strength of such a directional bias. In separate experiments we varied (i) the presence or absence of temporal transients (pausing, disappearance, occlusion); (ii) the distances travelled by the targets; and (iii) their acceleration or deceleration before and after collision. The tendency to see the objects stream past one another was not related to the strength of an hypothesized directional bias, suggesting that the perception of this ambiguous motion display was not mediated by directional recruitment. Instead, the results suggest that perceived direction reflects the operation of neural constraints that mirror the constraints operating upon moving objects in the three-dimensional natural world. |
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Authors:
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A B Sekuler; R Sekuler |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Perception Volume: 28 ISSN: 0301-0066 ISO Abbreviation: Perception Publication Date: 1999 |
Date Detail:
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Created Date: 2000-03-01 Completed Date: 2000-03-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0372307 Medline TA: Perception Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 415-32 Citation Subset: IM; S |
Affiliation:
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Department of Psychology, University of Toronto, Ontario, Canada. sekuler@psych.utoronto.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Graphics Humans Motion Perception* Optical Illusions* Psychological Tests Psychophysics |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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