Active control as evidence in favor of sense of ownership in the moving Virtual Hand Illusion.

Author

Victòria Brugada-Ramentol

Affiliation

Collective Behavior Lab, Champalimaud Research, Champalimaud Center for the Unknown, 1400-038 Lisbon, Portugal; Graduate Program in Areas of Basic and Applied Biology (GABBA), University of Porto, 4200-465 Porto, Portugal. Electronic address: [Email]

Abstract

The sense of ownership, the feeling that our body belongs to ourselves, relies on multiple sources of sensory information. Among these sources, the contribution of visuomotor information is still debated. We tested the effect of active control in the sense of ownership in the moving Virtual Hand Illusion. Participants reported sense of ownership and sense of agency over a virtual arm in which we manipulated the morphological congruence of the hand and the visuomotor information. We found that congruent active control enhanced and maintained the reported sense of ownership over a hand that appeared detached from the body, but not in a morphological congruent limb. Also, incongruent active control, achieved by adding noise to the trajectory of the movement, decreased both reported sense of agency and ownership. Overall, our results are consistent with a framework in which active control acts as evidence for eliciting a sense of ownership.

Keywords

Active control,Bayesian framework,Morphological congruence,Sense of agency,Sense of ownership,Visuomotor information,

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