‘Optical Illusion of the Year’ 1st Place

The American Association of Neurocorrelation (NCS) holds a new optical illusion competition every year to scientifically identify and understand how the brain perceives it. This year’s 15th contest winners were announced.

First place returned to the optical illusion of a spinning fish figure. This optical illusion, titled “ Dual Axis Optical Illusion ” by American game developer Frank Force, is complicated by the fish moving in four directions: right to left, left to right, top to bottom, bottom to top as the virtual axis rotates. Seems to rotate. In the middle of the image, words appearing on the screen indicating the direction of rotation, such as vertical axis, horizontal axis, clockwise and counterclockwise, each time the fish appears to rotate in that direction. But when the word disappears, it becomes obscure again in which direction the fish rotate. The secret of this illusion is in what intersection of moving lines the eye focuses on.

‘Rotating circle’ on the third place is an example of how the movement of a specific object looks different from the movement of another object. The black point in the center rotates in a circle in the same direction only at the same place. But when placed inside four large dots moving outside, it appears to move more, down, left and right, even in a triangular shape.

In addition, the color of the dots looks different depending on the direction in which the work of the researcher Haruaki Fukuda, Fukuda University, who ranked second, changed the color. If a dot is drawn as if it is moving from top to bottom, the point looks red and green. On the other hand, when the dot feels like moving from left to right, the point appears yellow. But to see it in yellow, you need to refocus your eyes. The millions of pixels of LCD screens show how optical illusions can happen. The second optical illusion can be seen at this address