Department of Computer Science and Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi, 441-8580, Japan.
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan.
Sci Rep. 2018 May 15;8(1):7541. doi: 10.1038/s41598-018-25951-2.
Body ownership can be modulated through illusory visual-tactile integration or visual-motor synchronicity/contingency. Recently, it has been reported that illusory ownership of an invisible body can be induced by illusory visual-tactile integration from a first-person view. We aimed to test whether a similar illusory ownership of the invisible body could be induced by the active method of visual-motor synchronicity and if the illusory invisible body could be experienced in front of and facing away from the observer. Participants observed left and right white gloves and socks in front of them, at a distance of 2 m, in a virtual room through a head-mounted display. The white gloves and socks were synchronized with the observers' actions. In the experiments, we tested the effect of synchronization, and compared this to a whole-body avatar, measuring self-localization drift. We observed that visual hands and feet were sufficient to induce illusory body ownership, and this effect was as strong as using a whole-body avatar.
身体所有权可以通过虚幻的视触整合或视觉运动同步/连贯性来调节。最近有报道称，通过第一人称视角的虚幻视触整合，可以产生对不可见身体的虚幻所有权。我们旨在测试通过主动的视觉运动同步方法是否可以诱导不可见身体的类似虚幻所有权，以及虚幻的不可见身体是否可以在观察者的正面和背面体验到。参与者通过头戴式显示器在虚拟房间中观察到距离他们 2 米远的左右白色手套和袜子。白色手套和袜子与观察者的动作同步。在实验中，我们测试了同步的效果，并将其与全身化身进行了比较，以测量自我定位漂移。我们观察到，视觉手和脚足以引起虚幻的身体所有权，而且这种效果与使用全身化身一样强烈。
