These exhibits illustrate the powerful role of attention in determining what we see - and what we don't see. The Eye Tracker uses state-of-the-art technology to track the movements of your eyes as they scan an image. Although you're not aware of it, your eyes are constantly making tiny movements, even when you're concentrating intensely on one thing. This exhibit shows how your eyes move from one part of a scene to another, gathering information about each visual element. It also shows how two people may search an image in completely different ways - which is one reason why we all see the world differently. Change Blindness confronts you with a different situation - a normal city streetscape that seems to remain the same except for a persistent steady blinking. But are you really paying attention to everything going on in front of you? How much of the scene are you actually aware of?