Three Armed Bandit?

If I could fool you into believing that a fake rubber hand that you were looking at was really your own hand, how would you react if I took a knife to it? Weird questions that Neuro-science researchers busy themselves with, but really fairly amazing. Here's an article in Scientific American about the study:

"A knife-wielding researcher is bearing down on your right hand—or is it your hand? You see three arms in front of you, and you can feel your palms dampen with fear-induced perspiration. But is it your right hand the kitchen knife is plunging toward, or a false, rubber right hand?" (from Scientific American)