The scintillating grid illusion causes the brain to perceive dark spots inside the white ... after seeing it in the book "Optical Art: Theory and Practice" (Beekman House, 1969).

Of course, the part of the video that shows the pencil moving underneath the cube is down to clever editing (no-one's drawing ...

The secret to the optical illusion is the object strategically placed underneath her. A dark, long piece of cloth — possibly a scarf or a shawl — is spread out parallel to her body.

Optical illusions have always fascinated humans, challenging our perception and revealing how our brains interpret visual information. This article presents a captivating optical illusion: a ...

Each picture is not what it appears to be. It is the effect of the optical illusion art that has caused an internet frenzy. Take a look at the images below and tell us what they look like to you.

Optical illusions are a unique form of brain teasers that not only challenge our perception but also keep us engaged in the art ... among dark purple grapes in this mind-bending optical illusion?( ...