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Changes in body perception following virtual object manipulation are accompanied by changes of the internal reference
Wladimir Kirsch1, Wilfried Kunde2
1Department of Psychology, University of Würzburg, Röntgenring 11, 97070, Würzburg, Germany. kirsch@psychologie.uni-wuerzburg.de.
Scientific Reports
|May 2, 2023
Summary
Sensory integration and recalibration, processes affecting body perception, can stem from the same sensorimotor experience. This study found opposing biases in perceived and produced finger posture, supporting a common origin.
Area of Science:
- Neuroscience
- Perception Psychology
- Human Motor Control
Background:
- Discrepant multisensory signals can alter body perception.
- Changes are attributed to either sensory integration or recalibration.
Purpose of the Study:
- To investigate if a single sensorimotor experience can induce both multisensory integration and recalibration effects.
- To explore the common origins of these body perception changes.
Main Methods:
- Participants controlled visual cursors with finger movements to enclose visual objects.
- Judgments of perceived finger posture (multisensory integration) and production of finger posture (recalibration) were recorded.
- Visual object size was manipulated to observe effects on perception and production.
Main Results:
- Varying visual object size caused systematic, opposing biases in perceived and produced finger distances.
- Perceived finger distance showed one bias, while produced finger distance showed an opposite bias.
Conclusions:
- The observed pattern of results supports the hypothesis of a common origin for multisensory integration and recalibration.
- Sensorimotor experiences can simultaneously influence body perception through both integration and recalibration mechanisms.
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