Description : afforded actions as a behavioral assessment of physical presence in virtual environments
Equipe/Organisme : Immersions Team – Institute of Movement Sciences (IMS)
Auteur principal : Jean-Claude Lepecq
Year : 2007
Our study aims to behaviorally objectivate the feeling of presence in a virtual environment. A particular affordance was used as a potential candidate for behavioral assessment of physical presence in virtual environments. The subjects' task was to walk through a virtual aperture of variable widths. In the case of presence, the subjects' body orientation, while walking, was hypothesized to be adapted to the width of the aperture and to their own shoulder width. Results show that most subjects adapted their behavior to both their body architecture and the virtual width constraints. These subjects exhibited a behavioral transition from frontal walking to body rotation as the aperture width diminished. The same behavioral transition has already been documented in real environments (Warren and Whang, 1987). This behavioral adjustment is thus assumed to be an objective indication of presence. Beyond these results, the present study suggests that every afforded action could be a potential tool for sensorimotor assessment of physical presence.
Lepecq J.C., Bringoux, L., Pergandi, J.M., Coyle T., Mestre, D. (2008). Afforded Actions as a Behavioral Assessment of Physical Presence. Communication at 11th International Workshop on Presence, Padova, Italy, 16-18 October 2008.
Lepecq J.C., Bringoux, L., Pergandi, J.M., Coyle T., Mestre, D. (2009). Afforded Actions as a Behavioral Assessment of Physical Presence in Virtual Environments. Virtual Reality. Vol 13 (on line).