And perception-based activities such as optical illusions can be a great ... you can see that the image is actually black and white. It has coloured lines on top of it. From far away the colour ...

An optical illusion showed a leopard on a tree with a hidden fish. Users were challenged to spot it in 10 seconds.

The image above is one such creation—a black-and-white visual masterpiece with patterns and curved lines. Within its hypnotic design lies a hidden word, can you find it? How Optical Illusions ...

The new trend on the internet asking people to “find the curved lines ... a blue and black dress was perceived by many as a white and gold dress. Earlier this year, an optical illusion ...

Optical illusions ... crowd of lines there's hidden a piano as well. Our brain is wired to look for patterns to process visual information efficiently. Here, the repetitive black-and-white zebra ...