In the Lenggenhager-Blanke study, the subject also wears a pair of goggles and views a video image of the back of his own body. Then an experimenter rubs his back, which he can clearly see in the goggles as he feels it. This combination helps to convince him that the video projection really does represent his body, projected in front of him.

This manipulation doesn't trick anyone into thinking that their consciousness is floating behind their corporeal body (as Ehrsson's did). But it can get them a bit confused about where exactly they're standing—in general, the synchronized touching makes the subject feel like he's a bit closer to the projection in space than he really is.