I Know I'm no longer myself when I see my own body standing beside me. What's more, when I look down, I see the body of a man. Then I lift my arms, and the other"me" moves her arms in time. It's an odd feeling. I'm wearing an Oculus Rift virtual reality headset as part of a system developed by Yifei Chai at Imperial College London that gives you the illusion of inhabiting another body. It is Chai's body I see where my own should be. He is standing next to me, wearing a head-mounted, twin wide-angle camera to film my body and his own. These two perspectives are sent to my headset where they are flipped -1 see myself as having his body and my body appears next to me. But that's not all. My movements are being tracked by a Kinect camera. Chai is wearing a suit full of electrical stimulators that force his arms into the same position as mine. This enhances the illusion: when I look down, the movement of the body I see matches my physical movement.
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