EYES IN THE BACK OF YOUR HEAD
Have you ever had that feeling you’re being been watched or that someone in the crowd is looking at you? It’s a phenomenon known as gaze detection, and it’s the brain’s way of keeping an eye on potential threats. Gaze has been an important part of human evolution. Unlike most other animals, humans have a large sclera, which is the white matter that surrounds the pupil. For most animals, a large sclera reveals their eyes, and therefore their presence, to potential predators. But humans use the sclera as a vital tool in communication to monitor eye movement and gaze. However, even when our eyes don’t meet the gaze of another, our brain seems to know when someone is looking at us.