It's easy to make your brain think it's in someone else's body

First they gave participants the illusion of inhabiting an invisible body, so that people felt an actual physical sensation when an empty space was touched and responded with fear when that empty space was threatened. Now, in research published this week in the journal Current Biology, the researchers have gone on to body-swapping.

To conjure up the sensation that the person in the machine was in the other person's body, the scientists then touched the two bodies at the same time in the exact same places.