Trials on virtual body editing: Invisible body and body-part remapping
Humans' perception and behavior are affected by their own body as shown in empirical studies about affordance and embodiment. Recent advances of virtual-reality technology enable us to induce illusory body ownership to different bodies. I will introduce relevant studies on illusory body ownership using virtual reality, and recent studies in our laboratory. In the first series of experiments, we presented only hands and feet ahead of the participants (2 meters) in a head-mounted display (HMD), that were synchronously moved with participants' body movement. Participants felt as though the empty space between hands and feet was their own invisible body. Thus, illusory/virtual out-of-body experience could be induced to the invisible body. In the second series of experiments, we presented a virtual arm that was synchronously moved with participants' thumb in the HMD. They felt as though the virtual arm was their own third arm. Thus, the actual thumb could be remapped to the virtual arm. In line with these studies, we would like to expand the potential of virtual body editing and investigate its effects on human perception, action and social behavior.