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Immediate effects of visual-motor illusion on resting-state functional connectivity
Katsuya Sakai1, Keisuke Goto2, Rui Watanabe3
1Graduate School of Human Health Sciences, Tokyo Metropolitan University, Japan; Faculty of Healthcare Sciences, Chiba Prefectural University of Health Sciences, Japan.
Brain and Cognition
|October 31, 2020
Summary
Visual-motor illusion (VMI) enhances kinesthetic sensation and body ownership by altering brain connectivity. This neuroimaging study suggests VMI could be a therapeutic tool for motor rehabilitation.
Area of Science:
- Neuroscience
- Motor Control
- Rehabilitation
Background:
- Visual-motor illusion (VMI) evokes kinesthetic sensation during rest.
- Previous research shows VMI activates motor association areas.
- The immediate impact of VMI on resting-state functional connectivity (RSFC) remains unclear.
Purpose of the Study:
- To investigate if VMI induction alters RSFC.
- To assess changes in kinesthetic illusion and body ownership post-VMI.
Main Methods:
- Functional near-infrared spectroscopy (fNIRS) measured RSFC in 13 healthy adults.
- Participants underwent VMI and observation conditions (20 min each).
- RSFC was measured before and after each condition; illusion and ownership were rated post-condition.
Main Results:
- VMI significantly increased kinesthetic illusion and body ownership compared to observation.
- RSFC analysis revealed increased connectivity in brain areas related to kinesthetic illusion, body ownership, and motor execution after VMI.
- These changes were more pronounced following the VMI condition than the observation condition.
Conclusions:
- RSFC serves as a biomarker for VMI-induced brain function changes.
- VMI shows potential for therapeutic applications in stroke and orthopedic rehabilitation.
