ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment
Proceedings of the CHI Conference on Human Factors in Computing Systems(2024)
摘要
Virtual co-embodiment enables two users to share a single avatar in Virtual
Reality (VR). During such experiences, the illusion of shared motion control
can break during joint-action activities, highlighting the need for
position-aware feedback mechanisms. Drawing on the perceptual crossing
paradigm, we explore how haptics can enable non-verbal coordination between
co-embodied participants. In a within-subjects study (20 participant pairs), we
examined the effects of vibrotactile haptic feedback (None, Present) and avatar
control distribution (25-75
(Targeted, Free-choice) on participants Sense of Agency (SoA), co-presence,
body ownership, and motion synchrony. We found (a) lower SoA in the free-choice
with haptics than without, (b) higher SoA during the shared targeted task, (c)
co-presence and body ownership were significantly higher in the free-choice
task, (d) players hand motions synchronized more in the targeted task. We
provide cautionary considerations when including haptic feedback mechanisms for
avatar co-embodiment experiences.
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