Hey, that's really neat, Kerry
Hmmm ...
At first gance it was clockwise (so I voted that way).
When I looked slightly to the side and watched the figure with peripheral vision, it was easy to reverse it to anticlockwise.
Then, it became easy to look directly at the figure and reverse it.
Which might indicate that, either the brain can be trained to perceive things differently, .....
.......... or I'm bipolar
(Which, incidentally, I am not).