Voluntary self-touch increases body ownership
Experimental manipulations of body ownership have indicated that multisensory integration is central to forming bodily self-representation. Voluntary self-touch is a unique multisensory situation involving corresponding motor, tactile and proprioceptive signals. Yet, even though self-touch is freque...
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doaj-219650e494634778baa4a5a52497578f2020-11-24T21:39:04ZengFrontiers Media S.A.Frontiers in Psychology1664-10782015-10-01610.3389/fpsyg.2015.01509162293Voluntary self-touch increases body ownershipMasayuki eHara0Polona ePozeg1Polona ePozeg2Giulio eRognini3Giulio eRognini4Giulio eRognini5Takahiro eHiguchi6Kazunobu eFukuhara7Akio eYamamoto8Toshiro eHiguchi9Olaf eBlanke10Olaf eBlanke11Olaf eBlanke12Roy eSalomon13Roy eSalomon14Saitama UniversityÉcole Polytechnique Fédérale de LausanneÉcole Polytechnique Fédérale de LausanneÉcole Polytechnique Fédérale de LausanneÉcole Polytechnique Fédérale de LausanneÉcole Polytechnique Fédérale de LausanneTokyo Metropolitan UniversityTokyo Metropolitan UniversityThe University of TokyoThe University of TokyoÉcole Polytechnique Fédérale de LausanneÉcole Polytechnique Fédérale de LausanneUniversity Hospital of GenevaÉcole Polytechnique Fédérale de LausanneÉcole Polytechnique Fédérale de LausanneExperimental manipulations of body ownership have indicated that multisensory integration is central to forming bodily self-representation. Voluntary self-touch is a unique multisensory situation involving corresponding motor, tactile and proprioceptive signals. Yet, even though self-touch is frequent in everyday life, its contribution to the formation of body ownership is not well understood. Here we investigated the role of voluntary self-touch in body ownership using a novel adaptation of the rubber hand illusion (RHI), in which a robotic system and virtual reality allowed participants self-touch of real and virtual hands. In the first experiment, active and passive self-touch were applied in the absence of visual feedback. In the second experiment, we tested the role of visual feedback in this bodily illusion. Finally, in the third experiment, we compared active and passive self-touch to the classical RHI in which the touch is administered by the experimenter. We hypothesized that active self-touch would increase ownership over the virtual hand through the addition of motor signals strengthening the bodily illusion. The results indicated that active self-touch elicited stronger illusory ownership compared to passive self-touch and sensory only stimulation, and indicate an important role of active self-touch in the formation of bodily self.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2015.01509/fullVolitionrubber hand illusionsense of agencymultisensory integrationSense of body ownershipself-touch |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Masayuki eHara Polona ePozeg Polona ePozeg Giulio eRognini Giulio eRognini Giulio eRognini Takahiro eHiguchi Kazunobu eFukuhara Akio eYamamoto Toshiro eHiguchi Olaf eBlanke Olaf eBlanke Olaf eBlanke Roy eSalomon Roy eSalomon |
spellingShingle |
Masayuki eHara Polona ePozeg Polona ePozeg Giulio eRognini Giulio eRognini Giulio eRognini Takahiro eHiguchi Kazunobu eFukuhara Akio eYamamoto Toshiro eHiguchi Olaf eBlanke Olaf eBlanke Olaf eBlanke Roy eSalomon Roy eSalomon Voluntary self-touch increases body ownership Frontiers in Psychology Volition rubber hand illusion sense of agency multisensory integration Sense of body ownership self-touch |
author_facet |
Masayuki eHara Polona ePozeg Polona ePozeg Giulio eRognini Giulio eRognini Giulio eRognini Takahiro eHiguchi Kazunobu eFukuhara Akio eYamamoto Toshiro eHiguchi Olaf eBlanke Olaf eBlanke Olaf eBlanke Roy eSalomon Roy eSalomon |
author_sort |
Masayuki eHara |
title |
Voluntary self-touch increases body ownership |
title_short |
Voluntary self-touch increases body ownership |
title_full |
Voluntary self-touch increases body ownership |
title_fullStr |
Voluntary self-touch increases body ownership |
title_full_unstemmed |
Voluntary self-touch increases body ownership |
title_sort |
voluntary self-touch increases body ownership |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Psychology |
issn |
1664-1078 |
publishDate |
2015-10-01 |
description |
Experimental manipulations of body ownership have indicated that multisensory integration is central to forming bodily self-representation. Voluntary self-touch is a unique multisensory situation involving corresponding motor, tactile and proprioceptive signals. Yet, even though self-touch is frequent in everyday life, its contribution to the formation of body ownership is not well understood. Here we investigated the role of voluntary self-touch in body ownership using a novel adaptation of the rubber hand illusion (RHI), in which a robotic system and virtual reality allowed participants self-touch of real and virtual hands. In the first experiment, active and passive self-touch were applied in the absence of visual feedback. In the second experiment, we tested the role of visual feedback in this bodily illusion. Finally, in the third experiment, we compared active and passive self-touch to the classical RHI in which the touch is administered by the experimenter. We hypothesized that active self-touch would increase ownership over the virtual hand through the addition of motor signals strengthening the bodily illusion. The results indicated that active self-touch elicited stronger illusory ownership compared to passive self-touch and sensory only stimulation, and indicate an important role of active self-touch in the formation of bodily self. |
topic |
Volition rubber hand illusion sense of agency multisensory integration Sense of body ownership self-touch |
url |
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2015.01509/full |
work_keys_str_mv |
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