The illusion of the hole that spreads seems to be confusing your heart, but it's really your eyes
Akika Kitaoka, Ritsumeikan University, Japan
The illusion of the above looks like the viewer feels like falling into the hole that is enlarged. And there was a sufficient explanation of why this happened.
Visual tricks can be caused by different elements of visual systems and nerve systems, even if the effect is similar. For example, a circle that rotates the brell stuff illusion is created by communication delays between different areas of the brain that treats visuals. Meanwhile, another rotating circle illusion …
Source: www.newscientist.com