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The rubber hand illusion effectiveness on body ownership induced by self-produced movements: A Meta-Analysis
University of Skövde, School of Bioscience.
2020 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Body ownership can be studied via the rubber hand illusion (RHI), in which an artificial limb can be perceived as belonging to oneself. In the so-called moving RHI paradigm, both body ownership and sense of agency, induced by self-produced movements, can be investigated. The key question of this approach is whether movements generated by oneself increase the illusion of body ownership. Thus far, the results from moving RHI studies are inconsistent.This has led to uncertainty regarding the influences of the motor control mechanism on body ownership. Therefore, this study will present the first meta-analysis on moving RHI to estimate the illusory effectiveness induced by self-produced movements. A total of 23 experimental comparisons with 821 subjects were included in the meta-analysis. The results showed that the overall illusory effect induced by self-produced movements was superior toits control (e.g., asynchronous active movements) (Hedge’s g = 1.38, p < 0.001). However, due to dissimilarity in results between the studies, the sample size in the meta-analysis may not represent the general population. The subgroup analysis showed that studies using physical hands, such as wooden hands, yielded the largest effect compared to studies using a virtual projected hand or a video recorded image of the participant’s own hands. It can be speculated whether a three-dimensional hand with “realness” has an illusory advantage compared to hands presented in virtual or video image settings. Future studies need to apply aunified framework, particularly in experimental setups and measurements. This would obtain consistent results of the strength of the illusion within the moving RHI paradigm.

Place, publisher, year, edition, pages
2020. , p. 41
Keywords [en]
rubber hand illusion, body ownership, sense of agency, motor control mechanisms, meta-analysis
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:his:diva-18591OAI: oai:DiVA.org:his-18591DiVA, id: diva2:1445768
Subject / course
Cognitive Neuroscience
Educational program
Kognitiv neurovetenskap: Medvetandet och hjärnan - magisterprogram
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Examiners
Available from: 2020-06-23 Created: 2020-06-23 Last updated: 2020-06-23Bibliographically approved

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CiteExportLink to record
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