The Mystery of Self-Tickling

Go ahead and try to tickle yourself right now. Give it a good go.

Nothing happened, right? You didn't laugh even a little bit.

That’s because your brain is ruining the surprise. When you move your hand,

your Cerebellum sends a secret signal... to your sensory cortex that basically says:

'Ignore this, it’s just us!' It’s called an 'efference copy.' Your brain predicts exactly

where and when you’ll touch, so it cancels out the sensation before you even

feel it. It creates a blind spot to your own touch. But here is

the scary part. If you can tickle yourself... it might mean your brain's prediction