Posted by Jackwolfsbane on July 22, 2017

The black and white bands create the illusion of shadow, or depth, as your brain interprets it. The depth is impossible because the shadowed object, in this case, the bright colors, form a circle. Your brain tries to explain the apparent depth of a flat circle by assuming it's moving.

Posted by ry on May 10, 2013

y545y

Posted by doug on January 15, 2013

had a lot of fun

Posted by kentia on May 17, 2012

omglob!!!! its so freaky like totally dude as u all kno i dont really talk like this

Posted by billy on April 26, 2012

iss pretty coooo.

Posted by porsha on April 21, 2012

woah so cool :)

Posted by Kelly Pride on March 20, 2012

it works!!i love this,esp MJ..

Posted by TWL on March 12, 2012

amazing!!!!!!!!! i love this one!!!!!!

Posted by jahneisha on November 19, 2011

i love doing these there amazing

Posted by Pipiana on October 29, 2011

fra-key!!!!!!!

Posted by smartty pants on October 7, 2011

sooooo coool the best thing ever!!!!!!!!!!!!! lol not kidding

Posted by pretty girl on October 7, 2011

these optical illusions are soooo sweet there the best ive seen yet!!!!!!!!!!!!!!!!!.

Posted by pintu on October 1, 2011

amazing!!!!!!!!!!!!!!!!!!!

Posted by OMG on June 18, 2011

I just watched a hypnosis video on youtube. I was wide awake and full of bursts of energy and after watching it, i felt like i could fall over any minute. I slept for 19 hours straight after being up for 5 hours and after i couldn't see anything black, white or really bright colors (Hot pink, light blue,etc). Watched a energy burst video and couldnt sleep for 2 days. I guess those do work. http://www.youtube.com/watch?v=49XIlz5lCT0&feature=related energy burst!!! http://www.youtube.com/watch?v=HPjhvLO8OXo&feature=related real hypnosis

Posted by kate&kelso; on June 11, 2011

kate:really freaky but so cool!!! kelso:it freaks me out but still smart!!!

Posted by bob on May 8, 2011

sick

Posted by spy satelite on July 11, 2010

i like this one..whats the physiological explanation of why they appear to move..thats the question

Posted by allen d on May 25, 2010

this is fricking crazy dudes i was like wow

Posted by austin lafreniere on May 25, 2010

this is so cool

Posted by 7236781 on May 4, 2010

why do they look like they are moving? weird..

Posted by STOPIT on April 12, 2010

i like this one because it just moves slowly and it is like a real magic tric if u know what i mean but for my advice ni would put a blak dot in dead center so that they know whwere to look to see ther spirals moving thank u hope u read my coment

Posted by McKeNnA on January 25, 2010

nice work, dudez

Posted by chris on December 21, 2009

try scrolling up and down real fast it is cool

Posted by mixi mayhem on December 4, 2009

kool

Posted by Joe on June 14, 2009

lol I\'m gettin\' giddy lookin\' at this!

Posted by stopit on June 11, 2009

This is one of my favourites, the circles really do look like they\'re moving.