How to Overclock Your Perception

The Eagle Eye is a wristband that can measure the speed of your perception. It's like a watch with a big face, and it has a rectangular screen of small LED lights. If we alternate the positive and negative images rapidly, you can still easily see 27. But if we make it just a little bit faster than that, you can't see any number at all. So this speed is known as the flicker fusion frequency. Things are flickering so fast that they all fuse together perceptually. We know that there are cells in your visual cortex that can follow flicker at much higher rates than your consciousness can.