This type of illusion is called the The Troxler Effect, and was developed by physician Ignaz Paul Vital Troxler in 1804. It reveals that everything exists in reality, although our perception makes ...

So, if you think that your IQ is higher than 100% of people, then by using your sharp Hawk-Eye Vision and observation skills ...

Test your observation skills with this nature-themed optical illusion challenge. Spot all hidden tortoises camouflaged in ...

A mind-boggling optical illusion can trick the brain into thinking a static black hole is expanding, researchers have shown. This 'expanding hole' illusion, which is new to science, has been created ...

A new study on the effects of optical illusions has helped shed light on which part of the brain is in charge of consciousness. Scientists have used mice to look into the reactions the major organ has ...

Test your sharp eyes and quick mind with a fun optical illusion challenge! Most numbers appear identical, but one is an 'inverted 45'. Spotting this hidden digit requires keen focus and mental agility ...

"WWE SmackDown" in Hershey saw Cody Rhodes and general manager Nick Aldis butting heads. A cut in the first round didn't stop ...

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

For the first time, research shows that a certain kind of visual illusion, neon color spreading, works on mice. The study is also the first to combine the use of two investigative techniques called ...

Optical illusions aren't just for humans; animals also experience and utilize them for survival and reproduction. From appearing larger to scaring predators, these visual tricks reveal how animal ...

A recent study found that not all animals see optical illusions the same way humans do. Scientists checked out how guppies (little fish) and ring doves (birds that eat seeds) react to the Ebbinghaus ...