000225536 001__ 225536
000225536 005__ 20190317000633.0
000225536 0247_ $$2doi$$a10.5075/epfl-thesis-7180
000225536 02470 $$2urn$$aurn:nbn:ch:bel-epfl-thesis7180-7
000225536 02471 $$2nebis$$a10823633
000225536 037__ $$aTHESIS
000225536 041__ $$aeng
000225536 088__ $$a7180
000225536 245__ $$aEmbodiment Sensitivity to Movement Distortion and Perspective Taking in Virtual Reality
000225536 269__ $$a2017
000225536 260__ $$aLausanne$$bEPFL$$c2017
000225536 300__ $$a142
000225536 336__ $$aTheses
000225536 502__ $$aProf. Auke Ijspeert (président) ; Dr Ronan Boulic, Dr Bruno Herbelin (directeurs) ; Dr Pearl Pu Faltings, Dr Anatole Lécuyer, Prof. Franco Tecchia (rapporteurs)
000225536 520__ $$aDespite recent technological improvements of immersive technologies, Virtual Reality suffers from severe intrinsic limitations, in particular the immateriality of the visible 3D environment. Typically, any simulation and manipulation in a cluttered environment would ideally require providing feedback of collisions to every body parts (arms, legs, trunk, etc.) and not only to the hands as has been originally explored with haptic feedback. This thesis addresses these limitations by relying on a cross modal perception and cognitive approach instead of haptic or force feedback. We base our design on scientific knowledge of bodily self-consciousness and embodiment. It is known that the instantaneous experience of embodiment emerges from the coherent multisensory integration of bodily signals taking place in the brain, and that altering this mechanism can temporarily change how one perceives properties of their own body. This mechanism is at stake during a VR simulation, and this thesis explores the new venues of interaction design based on these fundamental scientific findings about the embodied self. In particular, we explore the use of third person perspective (3PP) instead of permanently offering the traditional first person perspective (1PP), and we manipulate the user-avatar motor mapping to achieve a broader range of interactions while maintaining embodiment. We are guided by two principles, to explore the extent to which we can enhance VR interaction through the manipulation of bodily aspects, and to identify the extent to which a given manipulation affects the embodiment of a virtual body.  Our results provide new evidence supporting strong embodiment of a virtual body even when viewed from 3PP, and in particular that voluntarily alternating point of view between 1PP and 3PP is not detrimental to the experience of ownership over the virtual body. Moreover, detailed analysis of movement quality show highly similar reaching behavior in both perspective conditions, and only obvious advantages or disadvantages of each perspective depending on the situation (e.g. occlusion of target by the body in 3PP, limited field of view in 1PP). We also show that subjects are insensitive to visuo-proprioceptive movement distortions when the nature of the distortion was not made explicit, and that subjects are biased toward self-attributing distorted movements that make the task easier.
000225536 6531_ $$avirtual reality
000225536 6531_ $$aembodiment
000225536 6531_ $$asense of agency
000225536 6531_ $$abody ownership
000225536 6531_ $$afirst and third person perspectives
000225536 6531_ $$ahuman-computer interaction
000225536 6531_ $$avisuomotor contingencies
000225536 6531_ $$avirtual body
000225536 700__ $$0246844$$aGalvan Debarba, Henrique$$g222281
000225536 720_2 $$0240519$$aBoulic, Ronan$$edir.$$g104608
000225536 720_2 $$0241247$$aHerbelin, Bruno$$edir.$$g146265
000225536 8564_ $$s34415229$$uhttps://infoscience.epfl.ch/record/225536/files/EPFL_TH7180.pdf$$yn/a$$zn/a
000225536 909C0 $$0252470$$pIIG$$xU12345
000225536 909CO $$ooai:infoscience.tind.io:225536$$pthesis-bn2018$$pDOI$$pIC$$pthesis$$qDOI2$$qGLOBAL_SET
000225536 918__ $$aIC$$dEDRS
000225536 919__ $$aSCI-IC-RB
000225536 917Z8 $$x108898
000225536 917Z8 $$x108898
000225536 917Z8 $$x108898
000225536 917Z8 $$x108898
000225536 920__ $$a2017-2-17$$b2017
000225536 973__ $$aEPFL$$sPUBLISHED
000225536 970__ $$a7180/THESES
000225536 980__ $$aTHESIS