Experimental set-up to induce the ‘body swap illusion’

In the illusion condition, the participant and the experimenter squeezed their hands in a synchronous manner, whereas in the control condition they squeezed each other’s hands in an alternating rhythm, with the experimenter returning the squeeze in a semi-random manner.

Petkova VI, Ehrsson HH (2008) If I Were You: Perceptual Illusion of Body Swapping. PLoS ONE 3(12): e3832