This nausea-inducing optical illusion is not what it seems
Briefly

The optical illusion, Pinna's Illusory Intertwining Effect, consists of overlapping circles that give the illusion of depth and movement. This effect confuses the brain with contradictory messages that suggest both spirals and flat circles. The illusion stems from slanted squares in a pattern that our peripheral vision interprets as spirals, leading to misperceptions of 3D images despite being a flat arrangement of shapes. It was first documented in an academic journal in 2002, illustrating the complexities of human visual perception.
This illusion, named Pinna's Illusory Intertwining Effect, first appeared in 2002, showcasing how contradictory messages can confuse our perception of shapes and depth.
The overlapping circles in the illusion are actually just laid out next to each other without any actual overlap, creating a perception of three-dimensional movement.
Read at Creative Bloq
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