The role of agency for perceived ownership in the virtual hand illusion |
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Affiliation: | 1. Otto Selz Institute for Applied Psychology—Mannheim Centre for Work and Health, University of Mannheim, Germany;2. Aging & Cognition Research Group, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany;3. Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Germany;4. Department of Psychology, School of Social Sciences, University of Mannheim, Germany;5. Department of Psychology, University of Koblenz-Landau, Germany |
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Abstract: | The rubber hand illusion shows that people can perceive artificial effectors as part of their own body under suitable conditions, and the virtual hand illusion shows the same for virtual effectors. In this study, we compared a virtual version of the rubber-hand setup with a virtual-hand setup, and manipulated the synchrony between stimulation or movement of a virtual “effector” and stimulation or movement of people’s own hand, the similarity between virtual effector and people’s own hand, and the degree of agency (the degree to which the virtual effector could be controlled by people’s own movements). Synchrony-induced ownership illusion was strongly affected by agency but not similarity, which is inconsistent with top-down modulation approaches but consistent with bottom-up approaches to ownership. However, both agency and similarity induce a general bias towards perceiving an object as part of one’s body, suggesting that ownership judgments integrate various sources of information. |
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Keywords: | Rubber hand illusion Virtual hand illusion Body ownership Body awareness Sense of agency Active operated Non-corporeal |
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