  Virtual Reality (VR) becomes accessible to mimic a "real-like" world now.
People who have a VR experience usually can be impressed by the immersive
feeling, they might consider themselves are actually existed in the VR space.
Self-consciousness is important for people to identify their own characters in
VR space, and illusory ownership can help people to "build" their "bodies". The
rubber hand illusion can convince us a fake hand made by rubber is a part of
our bodies under certain circumstances. Researches about autoscopic phenomena
extend this illusory to the so-called full body illusion. We conducted 3 type
of experiments to study the illusory ownership in VR space as it shows in
Figure 1, and we learned: Human body must receive the synchronized visual
signal and somatosensory stimulus at the same time; The visual signal must be
the first person perceptive; the subject and the virtual body needs to be the
same height as much as possible. All these illusory ownerships accompanied by
the body temperature decreases, where the body is stimulated.
