Pupils on holidays

Optical illusions are so much fun. When there is a new one in town, it is time for an optical excursion. Give your dilating and contracting pupils a well deserved vacation right where you are.

Recently, three researchers have published their article The eye pupil adjusts to illusory expanding holes, in which they uncovered the new optical illusion pictured below. Bruno Laeng and Shoaib Nabil, both from the department of psychology at the University of Oslo, and Akiyoshi Kitaoka, from the same at Ritsumeikan University (Japan), “found that participants varied considerably in their perceptions of subjective expansion.” Among many other interesting observations, their study shows that pupils tend to react more to black “holes” than colored ones, in the test images. What about that? The dark side always has such an appeal it seems.

What is your favorite optical illusion? Did you know that there is a Museum of Illusions in Toronto, and in Paris and Lyon as well? Book lovers, get The new book of optical illusions, by Georg Ruschemeyer at Firefly Books.

The « expanding hole» by Dr Akiyoshi Kitaoka, Ritsumeikan University.
PHOTO: RITSUMEIKAN UNIVERSITY /AKIYOSHI KITAOKA. Source: Frontiers.org, 22 July 2022.

Leave a Reply

Your email address will not be published.

error: Content is protected !!