Contribution of interaction force to the sense of hand ownership and the sense of hand agency

When performing willed actions, we have the unified and coherent experience of owning and controlling our body. Body ownership is believed to emerge from the integration of coherent multisensory signals, while agency is believed to emerge from the coherence between predicted and perceived outcomes o...

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Bibliographic Details
Published in:Scientific reports 2021-09, Vol.11 (1), p.18069-18069, Article 18069
Main Authors: Akselrod, Michel, Vigaru, Bogdan, Duenas, Julio, Martuzzi, Roberto, Sulzer, James, Serino, Andrea, Blanke, Olaf, Gassert, Roger
Format: Article
Language:English
Subjects:
631/378/2649
631/477/2811
Computer applications
Feedback
Hands
Humanities and Social Sciences
Independent study
Laboratories
multidisciplinary
Neurosciences
Robotics
Science
Science (multidisciplinary)
Sensorimotor system
Sensory integration
Virtual reality
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Summary:When performing willed actions, we have the unified and coherent experience of owning and controlling our body. Body ownership is believed to emerge from the integration of coherent multisensory signals, while agency is believed to emerge from the coherence between predicted and perceived outcomes of actions. As a consequence, body ownership and agency can both be modulated by multisensory conflicts. The contribution of active movement generation to ownership and agency has not been parametrically explored. Here, we investigated the contribution of interaction force between the agent and the environment to the sense of hand ownership (SO) and the sense of hand agency (SA). By combining robotics and virtual reality, we manipulated the sensorimotor and visual information during immersive scenarios to induce and quantify altered states of SO and SA. First, we demonstrated that SO and SA could be successfully manipulated by our experimental paradigms. Second, we showed that interaction force strongly contributes to SA, but to a lesser extent to SO. Finally, we showed that SO and SA interact beyond their common multisensory basis. Our results, based on two independent studies, provide a direct link between sensorimotor interactions and subjective body experience and demonstrate a new dissociation between SO and SA.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-97540-9