From shifting lines to impossible shapes, optical illusions reveal how easily our brains can be deceived. This documentary explains the science behind illusions and what they uncover about human ...

When you look at the picture below, do you see straight or curved lines? That's the debate triggered by the viral optical illusion that's now raging on social media. The image is an eight-by-eight ...

Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look away.

Optical illusions come in all forms, from simple tricks of the eye to complex geometric designs, but my personal favourites are the simple illusions that leave my brain well and truly frazzled. While ...

Your task is to find the hidden number sequence within 39 seconds. No you need to know that this is not about guessing but training your visual focus. Optical illusion puzzles are often used as ...

Challenge your observation skills with this fun visual puzzle that tests how sharp your focus really is. Can your eyes spot ...