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Visuo-proprioceptive integration and recalibration with multiple visual stimuli
Nienke B Debats1,2, Herbert Heuer3,4, Christoph Kayser3,5
1Department of Cognitive Neuroscience, Universität Bielefeld, Universitätsstrasse 25, 33615, Bielefeld, Germany. nienke.debats@uni-bielefeld.de.
Scientific Reports
|November 5, 2021
Summary
The brain integrates multiple visual stimuli during movement, not just the strongest one. This multisensory integration and recalibration process combines information from synchronous and delayed visual cues for a coherent perception.
Area of Science:
- Neuroscience
- Cognitive Science
- Sensory Perception
Background:
- The brain integrates sensory information for coherent perception.
- Multisensory integration and recalibration are key processes.
- Understanding these processes in naturalistic settings with multiple stimuli is crucial.
Purpose of the Study:
- To investigate how visuo-proprioceptive integration and recalibration are affected by multiple visual stimuli.
- To explore multisensory perception in more naturalistic conditions with multiple signals per modality.
Main Methods:
- A cursor-control task was employed.
- Proprioceptive information was combined with two visual stimuli at the movement endpoint.
- Visual stimuli were presented synchronously and with a delay relative to hand movement.
Main Results:
- Integration and recalibration biases were observed towards the synchronous stimulus and away from the delayed one.
- Experiment 2 demonstrated that proprioceptive biases result from the superposed contributions of multiple stimuli, not a winner-takes-all process.
Conclusions:
- Multisensory integration and recalibration are shaped by the combined influences of multiple stimuli.
- The brain does not solely rely on the most temporally proximal stimulus for integration.
- These findings advance the understanding of multisensory perception in complex environments.
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