Visuo-proprioceptive integration and recalibration with multiple visual stimuli

Abstract To organize the plethora of sensory signals from our environment into a coherent percept, our brain relies on the processes of multisensory integration and sensory recalibration. We here asked how visuo-proprioceptive integration and recalibration are shaped by the presence of more than one...

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Main Authors: Nienke B. Debats, Herbert Heuer, Christoph Kayser
Format: Article
Language:English
Published: Nature Portfolio 2021-11-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-00992-2
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author Nienke B. Debats
Herbert Heuer
Christoph Kayser
author_facet Nienke B. Debats
Herbert Heuer
Christoph Kayser
author_sort Nienke B. Debats
collection DOAJ
description Abstract To organize the plethora of sensory signals from our environment into a coherent percept, our brain relies on the processes of multisensory integration and sensory recalibration. We here asked how visuo-proprioceptive integration and recalibration are shaped by the presence of more than one visual stimulus, hence paving the way to study multisensory perception under more naturalistic settings with multiple signals per sensory modality. We used a cursor-control task in which proprioceptive information on the endpoint of a reaching movement was complemented by two visual stimuli providing additional information on the movement endpoint. The visual stimuli were briefly shown, one synchronously with the hand reaching the movement endpoint, the other delayed. In Experiment 1, the judgments of hand movement endpoint revealed integration and recalibration biases oriented towards the position of the synchronous stimulus and away from the delayed one. In Experiment 2 we contrasted two alternative accounts: that only the temporally more proximal visual stimulus enters integration similar to a winner-takes-all process, or that the influences of both stimuli superpose. The proprioceptive biases revealed that integration—and likely also recalibration—are shaped by the superposed contributions of multiple stimuli rather than by only the most powerful individual one.
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spelling doaj.art-96c98ce665ea4c46a08cdba7a44119e12022-12-21T21:19:43ZengNature PortfolioScientific Reports2045-23222021-11-0111111210.1038/s41598-021-00992-2Visuo-proprioceptive integration and recalibration with multiple visual stimuliNienke B. Debats0Herbert Heuer1Christoph Kayser2Department of Cognitive Neuroscience, Universität BielefeldDepartment of Cognitive Neuroscience, Universität BielefeldDepartment of Cognitive Neuroscience, Universität BielefeldAbstract To organize the plethora of sensory signals from our environment into a coherent percept, our brain relies on the processes of multisensory integration and sensory recalibration. We here asked how visuo-proprioceptive integration and recalibration are shaped by the presence of more than one visual stimulus, hence paving the way to study multisensory perception under more naturalistic settings with multiple signals per sensory modality. We used a cursor-control task in which proprioceptive information on the endpoint of a reaching movement was complemented by two visual stimuli providing additional information on the movement endpoint. The visual stimuli were briefly shown, one synchronously with the hand reaching the movement endpoint, the other delayed. In Experiment 1, the judgments of hand movement endpoint revealed integration and recalibration biases oriented towards the position of the synchronous stimulus and away from the delayed one. In Experiment 2 we contrasted two alternative accounts: that only the temporally more proximal visual stimulus enters integration similar to a winner-takes-all process, or that the influences of both stimuli superpose. The proprioceptive biases revealed that integration—and likely also recalibration—are shaped by the superposed contributions of multiple stimuli rather than by only the most powerful individual one.https://doi.org/10.1038/s41598-021-00992-2
spellingShingle Nienke B. Debats
Herbert Heuer
Christoph Kayser
Visuo-proprioceptive integration and recalibration with multiple visual stimuli
Scientific Reports
title Visuo-proprioceptive integration and recalibration with multiple visual stimuli
title_full Visuo-proprioceptive integration and recalibration with multiple visual stimuli
title_fullStr Visuo-proprioceptive integration and recalibration with multiple visual stimuli
title_full_unstemmed Visuo-proprioceptive integration and recalibration with multiple visual stimuli
title_short Visuo-proprioceptive integration and recalibration with multiple visual stimuli
title_sort visuo proprioceptive integration and recalibration with multiple visual stimuli
url https://doi.org/10.1038/s41598-021-00992-2
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