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Motion Aftereffect Illusion Demonstration

This file is a small executable (.EXE) that should run on most any computer.
It is also very small (22K) so doesn't take up much space on your computer.

Instructions
After the dowload, run the prorgam. Stare at the center of the discs for about
60-90 seconds. Then look away at some other object or surface (your hand, a poster on the wall, etc.)
We'll talk about what you saw in class, and why you saw it...

Download the Demo

If for some reason this download doesn't work for you, follow the Link on the Lecture Page
for an online version at another web site.