Thanks to my good friend and daughter-in-law’s sister, Tina, for forwarding this to me! I put my little twist on it in italics just for fun
If you see this Polka Dancer turning in clockwise to polka music, you are using your right brain (and like Polka Music fast and furious).
If you see it her turning the other way, you are using left brain (and sometimes like to dance polkas slow and romantic).
Some people do see both ways, but most people see it only one way. See if you can make her go one way and then the other by shifting the brain’s current.

BOTH DIRECTIONS CAN BE SEEN. Experimentation has shown that the two different sides or hemispheres of the brain are responsible for different manners of thinking. The following table illustrates the differences between left-brain and right-brain thinking:

Most individuals have a distinct preference for one of these styles of thinking. Some, however, are more whole-brained and equally adept at both modes. In general, schools tend to favor left-brain modes of thinking, while downplaying the right-brain activities. Left-brain scholastic subjects focus on logical thinking, analysis, and accuracy. Right-brained subjects, on the other hand, focus on aesthetics, feeling, and creativity. If you look away, the polka dancer may switch from one direction to the other. I found that if I just look at her feet or relax and look at the floor where the reflection shows, she will switch direction!