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Updated: Jun 2, 2026
06:30
Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
Published on: April 28, 2020
Perceived object stability depends on multisensory estimates of gravity
Michael Barnett-Cowan1, Roland W Fleming, Manish Singh
1Department of Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Tübingen, Germany. mbarnettcowan@gmail.com
Plos One
|May 11, 2011
Summary
The brain uses multisensory information, not just vision, to judge object stability. Perceived object stability is biased by the body's sense of gravity, influencing how stable objects appear.
Area of Science:
- Neuroscience
- Perception
- Human Factors
Background:
- Object stability is determined by the center-of-mass relative to the support base.
- Visual estimation of stability requires integrating shape, orientation, and gravity information.
- Perceived gravity shifts with body orientation, integrating vestibular and kinesthetic cues.
Purpose of the Study:
- To investigate whether multisensory information influences the visual estimation of object stability.
- To determine if the brain relies solely on visual cues for object stability perception.
Main Methods:
- Participants viewed objects near a table edge in three body orientations.
- Measured the critical angle at which object stability was ambiguous.
- Assessed perceived gravity using the subjective visual vertical.
Main Results:
- The perceived critical angle for object stability was significantly biased towards the subjective visual vertical.
- This bias indicates that the perceived stability aligns with the multisensory estimate of gravity.
Conclusions:
- The brain does not solely rely on visual heuristics for object stability.
- Multisensory estimates of gravity significantly influence the perceived stability of objects.
- Objects appear more stable when the head tilt aligns with the direction of potential instability.
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