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  Forward optic flow is prioritised in visual awareness independently of walking direction

Motyka, P., Akbal, M., & Litwin, P. (2021). Forward optic flow is prioritised in visual awareness independently of walking direction. PLoS One, 16(5): e0250905. doi:10.1371/journal.pone.0250905.

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 Creators:
Motyka, Paweł1, Author
Akbal, Mert2, 3, Author              
Litwin, Piotr1, Author
Affiliations:
1Faculty of Psychology, University of Warsaw, Poland, ou_persistent22              
2Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
3Hochschule der Bildenden Künste Saar, Saarbrücken, Germany, ou_persistent22              

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 Abstract: When two different images are presented separately to each eye, one experiences smooth transitions between them-a phenomenon called binocular rivalry. Previous studies have shown that exposure to signals from other senses can enhance the access of stimulation-congruent images to conscious perception. However, despite our ability to infer perceptual consequences from bodily movements, evidence that action can have an analogous influence on visual awareness is scarce and mainly limited to hand movements. Here, we investigated whether one's direction of locomotion affects perceptual access to optic flow patterns during binocular rivalry. Participants walked forwards and backwards on a treadmill while viewing highly-realistic visualisations of self-motion in a virtual environment. We hypothesised that visualisations congruent with walking direction would predominate in visual awareness over incongruent ones, and that this effect would increase with the precision of one's active proprioception. These predictions were not confirmed: optic flow consistent with forward locomotion was prioritised in visual awareness independently of walking direction and proprioceptive abilities. Our findings suggest the limited role of kinaesthetic-proprioceptive information in disambiguating visually perceived direction of self-motion and indicate that vision might be tuned to the (expanding) optic flow patterns prevalent in everyday life.

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Language(s): eng - English
 Dates: 2020-11-092021-04-152021-05-04
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1371/journal.pone.0250905
Other: eCollection 2021
PMID: 33945563
PMC: PMC8096117
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Grant ID : 2016/23/N/HS6/02920
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Funding organization : National Science Centre Poland

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Title: PLoS One
Source Genre: Journal
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Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 16 (5) Sequence Number: e0250905 Start / End Page: - Identifier: ISSN: 1932-6203
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000277850