Running head: RUBBER FOOT ILLUSION IN XENOMELIA 1 Disturbed Body Integrity and the “Rubber Foot Illusion” RUBBER FOOT ILLUSION IN XENOMELIA
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چکیده
Objective: Xenomelia, that is, the nonacceptance of one’s own limb, is an intriguing but little understood condition. We sought to further test the most prominent neuroscientific hypothesis that suggests xenomelia results from a breakdown in multisensory integration for the affected body part. Method: A ”rubber foot illusion” paradigm was developed and tested in healthy participants and in individuals with a desire for left foot amputation (xenomelia). Behavioral and physiological responses quantified illusory ownership of a fake foot after synchronous and asynchronous stroking of a visible rubber foot and the subject’s own hidden foot. Results: Healthy participants (n = 15) showed a rubber foot illusion similar to the well-known rubber hand illusion. Individuals with xenomelia (n = 9) experienced the rubber foot illusion in a way comparable to healthy controls. The only difference in the individuals with xenomelia was an increase in the vividness of the illusion for the undesired limb. This vividness of the illusion correlated positively with the strength of amputation desire. Conclusion: These findings might reflect the malleable sense of the body in xenomelia and suggest a weakened representation of the affected body part. These findings may support the use of multisensory stimulation in therapeutic settings. (PsycINFO Database Record (c) 2014 APA, all rights reserved). DOI: https://doi.org/10.1037/neu0000143 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-100471 Accepted Version Originally published at: Lenggenhager, Bigna; Hilti, Leonie; Brugger, Peter (2015). Disturbed body integrity and the ”rubber foot illusion”. Neuropsychology, 29(2):205-211. DOI: https://doi.org/10.1037/neu0000143 Running head: RUBBER FOOT ILLUSION IN XENOMELIA 1 Disturbed Body Integrity and the “Rubber Foot Illusion” RUBBER FOOT ILLUSION IN XENOMELIA 2
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Running head: RUBBER FOOT ILLUSION IN XENOMELIA 1 Disturbed Body Integrity and the “Rubber Foot Illusion” RUBBER FOOT ILLUSION IN XENOMELIA
Objective: Xenomelia, that is, the nonacceptance of one’s own limb, is an intriguing but little understood condition. We sought to further test the most prominent neuroscientific hypothesis that suggests xenomelia results from a breakdown in multisensory integration for the affected body part. Method: A ”rubber foot illusion” paradigm was developed and tested in healthy participants and in indi...
متن کاملDisturbed body integrity and the "rubber foot illusion".
OBJECTIVE Xenomelia, that is, the nonacceptance of one's own limb, is an intriguing but little understood condition. We sought to further test the most prominent neuroscientific hypothesis that suggests xenomelia results from a breakdown in multisensory integration for the affected body part. METHOD A "rubber foot illusion" paradigm was developed and tested in healthy participants and in indi...
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