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Eur J Neurosci. 2015 Mar;41(6):810-7. doi: 10.1111/ejn.12809. Epub 2014 Dec 30.

Binding body and self in visuo-vestibular conflicts.

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Department of Neurology, University Hospital Zurich, Frauenklinikstrasse 26, Zurich, CH-8091, Switzerland.


Maintenance of the bodily self relies on the accurate integration of multisensory inputs in which visuo-vestibular cue integration is thought to play an essential role. Here, we tested in healthy volunteers how conflicting visuo-vestibular bodily input might impact on body self-coherence in a full body illusion set-up. Natural passive vestibular stimulation was provided on a motion platform, while visual input was manipulated using virtual reality equipment. Explicit (questionnaire) and implicit (skin temperature) measures were employed to assess illusory self-identification with either a mannequin or a control object. Questionnaire results pointed to a relatively small illusion, but hand skin temperature, plausibly an index of illusory body ownership, showed the predicted drop specifically in the condition when participants saw the mannequin moving in congruence with them. We argue that this implicit measure was accessible to visuo-vestibular modulation of the sense of self, possibly mediated by shared neural processes in the insula involved in vestibular and interoceptive signalling, thermoregulation and multisensory integration.


body swap illusion; corporeal self; full body illusion; multisensory integration; self-identification

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