My results/findings so far...
With my glasses, works great.
Without my glasses, it doesn't... of course the screen and everything else more than 6-7 inches away is a blur so that might explain that.
My wife did not see it at first and only noticed slight movement after moving to a more direct line of view. Although her vision is pretty good, she did not have her glasses on at the time. I will try to get her to look at it again with her glasses to see if apparent movement increases.
If I focus on the center (or really any part of the image) and don't allow my eyes to "drift" the apparent motion stops. The more I let my eyes "wander" around the image the more apparent movement there is. When looking with only one eye, there is less apparent movement, but my eye doesn't wander over as much of the image at a time either...
Oh, and my wife kept thinking she was supposed to see snakes because of the "red forked tongues" on the outer edges...
- Marc
At 08:57 AM 7/13/2004, you wrote:
At 04:18 PM 7/12/2004 -0500, you wrote:I think this illusion relies heavily on the high-frequency transitions between adjacent segments in the circles. If you "filter out" the high-frequency info. (by, say, squinting) much of the movement disappears. Perhaps those with less than perfect vision will have a harder time seeing the illusory motion because of this?
Well, I tried it w/o my glasses (and I have an astigmatism in one eye and 20/200 vision in the other eye) and still saw the illusion. However, when I closed one eye and looked at it, the illusion went away. Anyone else notice that it seems to be binocular? Or is it just me?
Deb
Dr. Deborah S. Briihl Dept. of Psychology and Counseling Valdosta State University Valdosta, GA 31698 (229) 333-5994 [EMAIL PROTECTED] http://chiron.valdosta.edu/dbriihl/
Well I know these voices must be my soul... Rhyme and Reason - DMB
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G. Marc Turner, MEd, Network+, MCP
Instructor & Head of Computer Operations
Department of Psychology
Texas State University-San Marcos
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phone: (512)245-2526
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