Explain the phenomenon of strawberry fruit deception

The berries in the image seem to be filtered through a layer of gray background, fooling the viewers' eyes.

The photo was created by Akiyoshi Kitaoka, Professor of Psychology at Ritsumeikan University in Japan, looking like a strawberry cake through a color filter.

The controversial gray berries.

At first glance, many people will say these are red strawberries coated with a color filter. But in fact, the berries in the image have a gray color and a little bit of blue, not a bit of red in the image.

This phenomenon is called color convergence , which is how the region of the brain that governs colors modifies the world that people see when filtered through different light. Light entering the eye is a combination of different wavelengths of pigments on objects and light shining on them.

Bevil Conway, a visual cognitive expert of the National Eye Academy (USA), said: "Your brain says" the light source I'm looking at is the strawberry has a blue composition, so I'll automatically separate it from each pixel. "And you see gray pixels and separate it from the blue background, and see red".

Conway said that because we know strawberries are red, our brains are always ready to look at them with this color. This is also the nature of the phenomenon of color convergence.