[Rockhounds] Re: Right or Left Brained Rockhounds?

[Carol Carter-Wientjes]

The dancer in the first image that Kreigh sent us to was solid black so you 
can manipulate the rotation of that one. I just told my brain to perceive 
the raised leg either pass in front of or behind the other leg to change the 
direction. Could even see her do half turns left-right-left-right by 
concentrating really hard (without husband or cats talking to me long 
enough!)

With the addition of the white lines on each of these other 2 figures sent 
by Jeanette, I found it impossible to get my brain to "see" the image go the 
opposite direction. Those lines appear to force you (well, me anyway) to see 
only one direction of rotation.

Carol in a very soggy New Orleans today