Look closely at this picture. At first glance, you can see a big tortoise in the centre of the image. But look closer, and ...

During the winter months, Museum of Illusions Salt Lake City introduced new elements to their exhibits for the holidays.

So why do they look slanted? One person offers their opinion: "It’s th [e] alternating black/white diamonds making the ...

Here’s an amazing optical illusion that will leave your mind buzzing with questions. Here’s an amazing optical illusion that will leave your mind buzzing with questions. I was just chatting with my ...

Perception researchers have long known about the structural and functional features that differentiate our central vision from our peripheral vision. The central (or foveal) region of our retinas are ...