The contribution of real-time mirror reflections of motor actions on virtual body ownership in an immersive virtual environment

This paper reports an experiment that investigated people's body ownership of an avatar that was observed in a virtual mirror. Twenty subjects were recruited in a within-groups study where 10 first experienced a virtual character that synchronously reflected their upper-body movements as seen i...

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Vydáno v:2010 IEEE Virtual Reality Conference (VR) s. 111 - 114
Hlavní autoři: Gonzalez-Franco, Mar, Perez-Marcos, Daniel, Spanlang, Bernhard, Slater, Mel
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.03.2010
Témata:
agency
Avatars
body ownership
Computer graphics
Computer science
Large scale integration
Mirrors
Reflection
Rubber
rubber hand illusion
Synchronous motors
Virtual environment
Virtual reality
ISBN:9781424462377, 1424462371
ISSN:1087-8270
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Abstract This paper reports an experiment that investigated people's body ownership of an avatar that was observed in a virtual mirror. Twenty subjects were recruited in a within-groups study where 10 first experienced a virtual character that synchronously reflected their upper-body movements as seen in a virtual mirror, and then an asynchronous condition where the mirror avatar displayed prerecorded actions, unrelated to those of the participant. The other 10 subjects experienced the conditions in the opposite order. In both conditions the participant could carry out actions that led to elevation above ground level, as seen from their first person perspective and correspondingly in the mirror. A rotating virtual fan eventually descended to 2 m above the ground. The hypothesis was that synchronous mirror reflection would result in higher subjective sense of ownership. A questionnaire analysis showed that the body ownership illusion was significantly greater for the synchronous than asynchronous condition. Additionally participants in the synchronous condition avoided collision with the descending fan significantly more often than those in the asynchronous condition. The results of this experiment are put into context within similar experiments on multisensory correlation and body ownership within cognitive neuroscience.
AbstractList This paper reports an experiment that investigated people's body ownership of an avatar that was observed in a virtual mirror. Twenty subjects were recruited in a within-groups study where 10 first experienced a virtual character that synchronously reflected their upper-body movements as seen in a virtual mirror, and then an asynchronous condition where the mirror avatar displayed prerecorded actions, unrelated to those of the participant. The other 10 subjects experienced the conditions in the opposite order. In both conditions the participant could carry out actions that led to elevation above ground level, as seen from their first person perspective and correspondingly in the mirror. A rotating virtual fan eventually descended to 2 m above the ground. The hypothesis was that synchronous mirror reflection would result in higher subjective sense of ownership. A questionnaire analysis showed that the body ownership illusion was significantly greater for the synchronous than asynchronous condition. Additionally participants in the synchronous condition avoided collision with the descending fan significantly more often than those in the asynchronous condition. The results of this experiment are put into context within similar experiments on multisensory correlation and body ownership within cognitive neuroscience.
Author Slater, Mel
Gonzalez-Franco, Mar
Perez-Marcos, Daniel
Spanlang, Bernhard
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  surname: Gonzalez-Franco
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  givenname: Daniel
  surname: Perez-Marcos
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  organization: EVENT Lab., Univ. de Barcelona, Barcelona, Spain
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  givenname: Mel
  surname: Slater
  fullname: Slater, Mel
  email: melslater@ub.edu
  organization: EVENT Lab., Univ. de Barcelona, Barcelona, Spain
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Snippet This paper reports an experiment that investigated people's body ownership of an avatar that was observed in a virtual mirror. Twenty subjects were recruited...
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StartPage 111
SubjectTerms agency
Avatars
body ownership
Computer graphics
Computer science
Large scale integration
Mirrors
Reflection
Rubber
rubber hand illusion
Synchronous motors
Virtual environment
Virtual reality
Title The contribution of real-time mirror reflections of motor actions on virtual body ownership in an immersive virtual environment
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