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Updated: Jun 25, 2025
13:51
Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
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Bimodal moment-by-moment coupling in perceptual multistability
Jan Grenzebach1,2,3, Thomas G G Wegner1,2,4, Wolfgang Einhäuser2,5
1Cognitive Systems Lab, Institute of Physics, Chemnitz University of Technology, Chemnitz, Germany.
Journal of Vision
|May 31, 2024
Summary
Sensory perception is linked across senses. This study found that visual and auditory multistable perceptions are coupled moment-by-moment, suggesting shared brain mechanisms.
Area of Science:
- Cognitive Neuroscience
- Psychology
- Sensory Perception
Background:
- Multistable perception, where the brain perceives ambiguous stimuli in multiple ways, occurs across all sensory modalities.
- Theoretical debate exists on whether unified mechanisms govern multistability across different senses.
Purpose of the Study:
- To investigate moment-by-moment perceptual coupling between visual and auditory multistability.
- To determine if integrated or segregated interpretations in one modality influence the other.
Main Methods:
- Auditory perception was assessed via direct report.
- Visual perception was decoded from eye movements using a support-vector-machine (SVM) classifier.
- The co-occurrence of integrated versus segregated percepts in both modalities was quantified.
Main Results:
- An above-chance coupling was found between auditory and visual perceptual interpretations.
- Stimulus parameters were adjusted to minimize chance-based coupling.
- Coupling was observed even when ruling out postperceptual decision or response interference.
Conclusions:
- Moment-by-moment perceptual coupling exists between visual and auditory multistability.
- Findings support theories proposing joint mechanisms for cross-modal multistable perception.
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