That's the coolest Necker cube ever. (http://en.wikipedia.org/wiki/Necker_cube)

But I've never heard of any connection between left/right dominance and this phenomenon ("binocular rivalry"). I suspect it might be BS...

In any case, if you want to learn more, check out this (pdf) slideshow: http://visionlab.harvard.edu/Members/Olivia/tutorialsDemos/B...

This was put together by my friend Olivia, who's done a lot of work in this field. Be sure to check out pg. 16 -- Olivia's studied binocular rivalry not only in meditating monks, but also in people on 'shroom trips. Psychology is FUN! =)

That is very cool. Seems clockwise to me, but I notice if I look at it upside down, it seems to be turning counterclockwise, presumably because left and right are reversed then.

Turning it upside down might introduce some other variables. Check out Einstein on pg. 11 (warning... pdf): http://visionlab.harvard.edu/Members/Olivia/tutorialsDemos/B...

this i s a dupe. the first time through i didn't see the trick. scroll down until you only see a small fragment (or make your browser only a few hundred pixels high). show just the top of the head, or the bottom of the feet. If you get to that state, it seem pretty easy to reverse direction.

I saw it turning counterclockwise and could not see how it could possibly spin clockwise. Then I tilted my screen a tad and am now seeing it spin clockwise, and cannot "make it" spin counterclockwise again. Very cool.

Interesting.. I saw it as going clockwise... which sort of throws my theory that I was more logical than "feeling"s based person... maybe I need to seek a career in philosophy than hacking... :D

i also saw clockwise. and i'm definitely more logic oriented. i wouldn't make too big a deal out of this.

A lot of my friends saw it counterclockwise. I was clockwise though...hmm.

but if you read the descriptions, it makes left-brained thinkers seem smarter =[

"that liberal media!"

As much as I consider myself a "right brainer", she looks to be turning counter-clockwise to me without any ambiguity.

Dupe: http://news.ycombinator.com/item?id=69798

a way to make it change direction that works for me pretty much every time: see it, then look away from it, so you see the image only with your peripheral vision (it will look like someone skating to you, or away from you), then consciously make it change direction

Wierd. I can't figure out how to make it spin the other way. It spins counter-clockwise to me.