Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...

Our visual experience is constructed from a limited sampling of reality. Although our central vision is incredibly rich in detail and color, our peripheral vision is blurry, colorless, and lacking in ...

Our brains create false perceptions through these illusions, which make us see things that do not exist while they distort ...

Optical illusions are a treat for visually genius minds. These visual illusions are excellent at assessing and examining the workings of the human brain. Researchers around the world incorporate ...

Lightness perception, the visual system’s ability to maintain a stable representation of surface reflectance despite varying illumination, has long intrigued researchers. Central to this field is the ...

Optical illusions have gained a lot of popularity recently, as they get our brain to exercise, and can be the perfect test of ...

Visual illusions of motion are a major source of interest in the vision research community. Explaining how a still image can produce an illusory perception of motion is important for a more complete ...

The famous Ebbinghaus illusion, named for its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909). Despite appearances, the two orange circles are the same size. Have you ever looked at ...

This image contains a horse which you need to spot within 15 seconds of viewing time. The problem presents itself as a ...

"The Last Leaf" by O. Henry, published in 1907 in his collection The Trimmed Lamp and Other Stories of the Four Million, follows the story of "Johnsy" (Joanna), a young, impoverished artist who is ...