If leaving your own body behind or having an extra or virtual arm is not enough for you, how about switching bodies with someone else? In late 2008, Ehrsson and his colleague Valeria Petkova described an experimental set-up that creates this freaky illusion, They got two people to stand facing one another, one wearing a pair of head-mounted video cameras and the other wearing goggles with the images from the cameras projected inside, The pair were then asked to reach out and shake each other's right hand and, as they held their grip, to apply a synchronised series of squeezes.
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