Ilusion Fantasma / Ghost

I want to thank professor Akiyoshi KITAOKA, of the Department of Psychology at the Ritsumeikan University, Japan, for making me the great honor of including this work in his friend's gallery; his site is a must, for anyone involved in the human perception research; also, I want to thank Olly Payne, curator and owner of Op Art UK" for including some of my works in such magic and fascinating online gallery, an obligated place for everyone interested in Op Art.

There are no colors, movements, radial lines or concentric circles... Until you focus on the center.