via news.com.au (old stuff i just heard about):
i got scared shitless because at first i swear i thought i saw it counterclockwise then later i saw it clockwise only and couldn't revert back to my initial perception.
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.
a bit more info on the difference between left brain and right brain functions here >>
p/s - comment below if you see counter clockwise
