The problem isn't that it's an optical illusion (at least as far as I can see). The problem is that <- and -> are at alternating times true since the cat is spinning in a circle. That's why we have the words "clockwise" and "counterclockwise"
The poll doesn't really specify what the directions mean. Looking from above, it's spinning counter-clockwise, and I suspect everyone is saying the same thing. I've seen several of these and a few of them I was able to do the switch, but not with this one. I think the problrm is that the tail provides too distinct a reference for the direction to be ambiguous.
I love these types of illusions. There is a dancer .gif I found that does the same thing. Look up Left brain vs Right brain. or... here it is: http://www.heraldsun.com.au/news/right-brain-v-left-brain/story-e6frf7jo-1111114603615
So I use my left brain...
I DID! I DID IT! But with the other picture of the lady spinning! Oh shit! This is awesome!
If clockwise, then you use more of the right side of the brain and vice versa.
Most of us would see the dancer turning anti-clockwise though you can try to focus and change the direction; see if you can do it.
LEFT BRAIN FUNCTIONS
words and language
present and past
math and science
knows object name
RIGHT BRAIN FUNCTIONS
"big picture" oriented
symbols and images
present and future
philosophy & religion
can "get it" (i.e. meaning)
knows object function
Interesting... I could only see the cat moving counter-clockwise no matter how hard I tried. Then I followed the link to the classic "dancer" illusion, which to me was moving clockwise... Stared at it for awhile trying to get it to change direction with no luck. Came back to the cat to see it moving clockwise as well O_O
I think my head is going to explode. I was staring at the cat picture trying to change directions. Nothing happened. Then I went to the dancer link and saw it going the same direction, counter clockwise. As soon as I looked away I saw the dancer rotating clockwise, so I went back to look at the cat and it still looked like it was moving counter clockwise. NOW the cat is moving clockwise. What the hell is going on in my mind!
It's super weird when the illusion kicks in. I saw a similar one with a ballerina but I can't find it right now.
@pretender15: I haven't read the other comments so for all I know info about posting gifs has already been addressed. Apologies if that's so, but I'll give you the run down anyway: upload a gif to Giant Bomb, click the picture to make it full size, right click on it and copy the image's url. Then, in the text entry box, insert an html element and type <img src="[image's url]'> and you should get what you're after.
" @ViciousReiven said:I know how it actually works, the point was to make people look at it again and see it move the other direction." Are you all blind? if looking from above it is spinning clockways, not counter. "Nope.
It starts out moving counter clockwise then when the side of the body is in full view the head continues counter while the body returns to it's original position, once they re-align the head switches (front and back are identical, so when it faces front it switches to back) and then it repeats in reverse.
To see move in either direction you just need to move it to your peripheral vision and look back when it's either facing forward or backward, the frame of animation you return on determines what you see.
And I just ruined this for everyone ;)