Check out the following link to see whether you are right or left brain dominant. If you try, you can see the object move in both directions.
http://www.news.com.au/dailytelegraph/story/0,22049,22535838-5012895,00.html
Acupuncture, Chinese medicine, herbal medicine, alternative medicine, pulse diagnosis, trauma
It took me a minute but I finally saw both! Originally I went against the norm (big shocker there) and saw the dancer going clockwise. I love stuff like this.