Cedric van den Berg does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

Finding hidden images in optical illusions is an effective mental exercise that challenges your cognitive functions while ...

Optical illusions have recently sent the internet into a tizzy, as they get our brain to exercise, and can be the perfect test of our observational skills and keen eye. They are also super fun to ...