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  Spatio-temporal grouping in perceptual rivalry

Conrad, V., Vuong, Q., & Ernst, M. (2007). Spatio-temporal grouping in perceptual rivalry. Poster presented at 30th European Conference on Visual Perception (ECVP 2007), Arezzo, Italy.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-CC6F-B Version Permalink: http://hdl.handle.net/21.11116/0000-0003-F477-4
Genre: Poster

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 Creators:
Conrad, V1, 2, 3, 4, Author              
Vuong, QC, Author              
Ernst, MO2, 4, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Research Group Multisensory Perception and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497806              
3Research Group Cognitive Neuroimaging, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497804              
4Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Perceptual rivalry occurs when stimuli have multiple interpretations which are equally probable. For example, two distributions of dots, one translating leftward and one rightward can be perceived as a 3-D cylinder rotating clockwise or counterclockwise. Repetitive presentation of an ambiguous stimulus can stabilize one perceptual interpretation. Here we examined how unambiguous spatio-temporal contexts affect stabilization of ambiguous structure-from-motion stimuli. Using an intermittent-presentation paradigm we stabilized one interpretation of the ambiguous cylinder and introduced contextual information by providing an unambiguous version of the 3-D cylinder. We manipulated spatial distance and temporal proximity between ambiguous stimulus and unambiguous context. The task was to report perceived rotation direction of the ambiguous cylinder. We found that stabilization was more likely to be disrupted by unambiguous context that had appeared in corresponding locations in preceding frames. Context simultaneously presented with the stimulus at a different spatial location had little effect. This shows that temporal contexts were weighted more than spatial contexts, and suggests that the visual system analyses recent perceptual history to interpret the present input.

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 Dates: 2007-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: ConradVE2007
DOI: 10.1177/03010066070360S101
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Title: 30th European Conference on Visual Perception (ECVP 2007)
Place of Event: Arezzo, Italy
Start-/End Date: 2007-08-27 - 2007-08-31

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 36 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 87 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369