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  Seeing actions in the fovea influences subsequent action recognition in the periphery

Fademrecht, L., Barraclough, N., Bülthoff, I., & de la Rosa, S. (2015). Seeing actions in the fovea influences subsequent action recognition in the periphery. Poster presented at 38th European Conference on Visual Perception (ECVP 2015), Liverpool, UK.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-4506-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-AFA1-5
Genre: Poster

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http://pec.sagepub.com/content/44/1_suppl.toc (Publisher version)
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 Creators:
Fademrecht, L1, Author              
Barraclough, NE, Author
Bülthoff, I1, Author              
de la Rosa, S1, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              

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 Abstract: Although actions often appear in the visual periphery, little is known about action recognition away from fixation. We showed in previous studies that action recognition of moving stick-figures is surprisingly good in peripheral vision even at 75° eccentricity. Furthermore, there was no decline of performance up to 45° eccentricity. This finding could be explained by action sensitive units in the fovea sampling also action information from the periphery. To investigate this possibility, we assessed the horizontal extent of the spatial sampling area (SSA) of action sensitive units in the fovea by using an action adaptation paradigm. Fifteen participants adapted to an action (handshake, punch) at the fovea were tested with an ambiguous action stimulus at 0°, 20°, 40° and 60° eccentricity left and right of fixation. We used a large screen display to cover the whole horizontal visual field of view. An adaptation effect was present in the periphery up to 20° eccentricity (p<0.001), suggesting a large SSA of action sensitive units representing foveal space. Hence, action recognition in the visual periphery might benefit from a large SSA of foveal units.

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 Dates: 2015-08
 Publication Status: Published in print
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 Identifiers: DOI: 10.1177/0301006615598674
BibTex Citekey: FademrechtBBd2015
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Title: 38th European Conference on Visual Perception (ECVP 2015)
Place of Event: Liverpool, UK
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Title: Perception
Source Genre: Journal
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Pages: - Volume / Issue: 44 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 214 - 214 Identifier: -