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Precision control for a flexible body representation.
1Faculty of Psychology, Technische Universität Dresden, Dresden, Germany; Centre for Tactile Internet with Human-in-the-Loop, Technische Universität Dresden, Dresden, Germany.
Neuroscience and Biobehavioral Reviews
|November 5, 2021
Summary
This review explores how the brain adapts body representation by modulating sensory input. It suggests that reducing proprioception (body sense) helps integrate conflicting visual and body cues for flexible body models.
Area of Science:
- Neuroscience
- Cognitive Science
- Sensory Integration
Background:
- Adaptive body representation relies on integrating multisensory inputs into a flexible brain model.
- Top-down modulation of sensory processing, akin to precision control in Bayesian inference, is key to this flexibility.
Purpose of the Study:
- To evaluate the role of top-down contextual modulation in enhancing body model flexibility.
- To investigate the hypothesis that attenuating proprioception aids in integrating conflicting visual and proprioceptive bodily cues.
Main Methods:
- Review of empirical research on top-down contextualization of visual vs. proprioceptive body position information.
- Analysis of studies involving attentional task sets, the rubber hand illusion, and visuomotor adaptation.
Main Results:
- Evidence suggests that visual and proprioceptive information processing is contextually modulated top-down.
- Proprioceptive processing can be attenuated top-down, particularly in scenarios like the rubber hand illusion and visuomotor adaptation.
Conclusions:
- Proprioception's importance in body perception and action control is acknowledged.
- Top-down attenuation of proprioception (via precision control) facilitates the adaptation of the brain's body model to new visual feedback.
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