If you went blind, you?d still be able to unconsciously make your way across a cluttered room without bumping into anything. You’ve experienced this kind of blindsight if you’ve ever reflexively reached for a ball suddenly thrown at you. It?s made possible by a primitive visual pathway that controls behavior without conscious vision.
In Discover magazine, Eric Haseltine has created a way you can discover your blindsight. Click on the link below to see a picture of a group of coins. When you open your hand as if you were about to pick up one of the silver dollars, you automatically open your fingers wider than when you had reach for one of the dimes.