Nov. 18th, 2007

sff_corgi_lj: (Lit - Mysteries)
Cerrberus gave me a perfect lead-in to follow up on the dancer illusion: If one can see the figure, it appears to be spinning; and there are some perceptual differences in people that interpret the figure spinning one way or the other, or sometimes alternating. I've not looked at such an illusion for years, and do not remember the psychology behind this.
The Right Brain vs Left Brain test ... do you see the dancer turning clockwise or anti-clockwise?

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.
http://www.randominc.net/spinninglady/
The original image of a dancer in a perpetual spin can be interpreted two different ways... )
ETA: The Spinning Dancer and the Brain

This image, originally created by Nobuyuki Kayahara, is a great scientific personality test. If you see the dancer spinning clockwise, you’ve got excess spleen qi in your left frontal crockus. This means that you’re a vibrant personality whose passions are apparent to everyone around you, but sometimes you are indecisive. If you see her spinning counter-clockwise, the right ascension of your natal chart lies in your sagittal broab and there are Fire humours dribbling out your left nostril. You should see a doctor as soon as possible.

LEELA: Hey, let me ax you something, Frye.

I had to go look this up, because it just sorta stuck in my mind all of a sudden. It turned out to be more interesting than I suspected! I found what might be the best technical answer in the archives of the American Dialect Society:
Academia rulz OK! )

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