05/16/2007 10:44:47 AM |
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interesting illusions
Afterimages
Stare at the plus sign on the
left for about 30 seconds. As
you do this you probably will
see some colors around the blue
and green circles. After about
30 seconds, shift your gaze to
the plus sign on the right. What
did you see?
You probably saw a yellow and
desaturated reddish circle. Did
you notice that they were not
there before you tried this
experiment? Furthermore, unlike
the colored circles on the left,
the ones you saw on the right
moved around as your eyes moved,
which proves that these
perceptions are the result of
afterimages in your visual
system and not some trick of the
stimulus presentation on the
right.
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Jokes, Recipes, Games, Articles
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