[Paper] Effects of First- and Third-Person Perspective Switching on Sense of Embodiment and Task Efficiency in Object-Carrying Tasks with Walking in VR

In this study, we developed a system that allow users to switch between first- and third-person perspectives in a virtual reality (VR) environment. We investigated how this perspective-switching system affects the sense of embodiment, sense of presence, VR motion sickness, and task efficiency, compared to using only first- or third-person perspectives. The task was an "object-carrying task" where a designated object was placed in a designated box within a limited time, accompanied by "walking" in VR environment. This task had a higher degree of freedom and complexity than those in previous studies. The experiment revealed that switching to a third-person perspective improved the sense of embodiment. However, there was no significant advantage over the first-person perspective.