Why Can't You Tickle Yourself? Scientists Built a Machine to Find Out

Run your fingers over your own ribs and nothing happens, but let a friend do exactly the same thing and you collapse in laughter. So why can't you tickle yourself? In the nineteen-nineties, scientists built a pair of robots to find out. There are four reasons, and the last one is a twist: some people can tickle themselves, and rats can't. This is the story of a brain that predicts your own touch and turns the volume down, a robot that made a self-touch ticklish again with a delay of just two tenths of a second, the Berlin scientists who tickled rats, and what it all says about how your brain knows what is you. If you like finding out why your body does strange things, subscribe to Torvly for more. #Tickle #HumanBody #Torvly