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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 10th Tübinger Wahrnehmungskonferenz (TWK 2007), Tübingen, Germany.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-CD19-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-000B-0
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 3D-cylinder rotating clockwise or counterclockwise. Repetitive presentation of the ambiguous stimulus can stabilize one perceptual interpretation. Here we examined how unambiguous spatio-temporal contexts affected 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 3D-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 simultaneo usly presented with the stimulus at a different spatial location had little effect. This shows that temporal contexts were weighted more than spatial contexts, and suggest that the visual system analyses recent perceptual history to interpret the present input.

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 Dates: 2007-07
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: BibTex Citekey: 4851
 Degree: -

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Title: 10th Tübinger Wahrnehmungskonferenz (TWK 2007)
Place of Event: Tübingen, Germany
Start-/End Date: 2007-07-27 - 2007-07-29

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Title: 10th Tübinger Perception Conference: TWK 2007
Source Genre: Proceedings
 Creator(s):
Bülthoff, HH1, Editor            
Chatziastros, A1, Editor            
Mallot, HA, Editor            
Ulrich, R, Editor
Affiliations:
1 Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797            
Publ. Info: Kirchentellinsfurt, Germany : Knirsch
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 43 Identifier: ISBN: 3-927091-77-4