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  A spatially collocated sound thrusts a flash into awareness

Aller, M., Giani, A., Conrad, V., Watanabe, M., & Noppeney, U. (2015). A spatially collocated sound thrusts a flash into awareness. Frontiers in Integrative Neuroscience, 9: 16, pp. 1-8. doi:10.3389/fnint.2015.00016.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-4762-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-93D2-B
Genre: Journal Article

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Aller, M, Author
Giani, A1, 2, 3, Author              
Conrad, V1, 2, 3, 4, Author              
Watanabe, M3, 5, Author              
Noppeney, U1, 2, 3, Author              
Affiliations:
1Research Group Cognitive Neuroimaging, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497804              
2Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
4Research Group Multisensory Perception and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497806              
5Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              

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 Abstract: To interact effectively with the environment the brain integrates signals from multiple senses. It is currently unclear to what extent spatial information can be integrated across different senses in the absence of awareness. Combining dynamic continuous flash suppression and spatial audiovisual stimulation, the current study investigated whether a sound facilitates a concurrent visual flash to elude flash suppression and enter perceptual awareness depending on audiovisual spatial congruency. Our results demonstrate that a concurrent sound boosts unaware visual signals into perceptual awareness. Critically, this process depended on the spatial congruency of the auditory and visual signals pointing towards low level mechanisms of audiovisual integration. Moreover, the concurrent sound biased the reported location of the flash as a function of flash visibility. The spatial bias of sounds on reported flash location was strongest for flashes that were judged invisible. Our results suggest that multisensory integration is a critical mechanism that enables signals to enter conscious perception.

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 Dates: 2015-02
 Publication Status: Published online
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 Identifiers: DOI: 10.3389/fnint.2015.00016
BibTex Citekey: AllerGCWN2015
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Title: Frontiers in Integrative Neuroscience
Source Genre: Journal
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Publ. Info: Lausanne : Frontiers Research Foundation
Pages: - Volume / Issue: 9 Sequence Number: 16 Start / End Page: 1 - 8 Identifier: ISSN: 1662-5145
CoNE: https://pure.mpg.de/cone/journals/resource/1662-5145