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What Optical Illusions Tell You About Your Eyes and Mind: What You See is Based on Your Past Experiences
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Alex James  
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 More options Feb 13, 1:57 am
From: "Alex James" <alexjamesne...@gmail.com>
Date: Fri, 13 Feb 2009 09:57:58 +0300
Local: Fri, Feb 13 2009 1:57 am
Subject: What Optical Illusions Tell You About Your Eyes and Mind: What You See is Based on Your Past Experiences

In the same way, its hard to convince people about the truth when they're
continuously fed lies through the main stream media.

http://articles.mercola.com/sites/articles/archive/2008/03/15/what-il...
-tell-you-about-your-eyes-and-mind.aspx

more optical illusions here:
http://articles.mercola.com/sites/articles/archive/2008/12/23/amazing...
c-illusions-in-op-art.aspx

What Illusions Tell You About Your Eyes and Mind

Looking at the illusion above (need to visit the above link to see this), it
appears that two "donut holes" are changing in an opposite pattern -- when
one is light, the other is dark. But the two holes are actually changing
together.

You see the illusion because your visual system relies not just on color
information, but also on contrast information to make judgments. In fact,
far from being a minor side effect of color vision, contrast perception is
fundamental to the process of vision itself.

I
<http://articles.mercola.com/sites/articles/archive/2007/08/07/you-mus...
this-amazing-illusion.aspx>  love to look at optical illusions, but did you
know that the reason you're able to see them is because your eyes are making
mistakes? Or, put another way, your eyes are doing what they're supposed to
so you can see clearly, and survive, in a fast-paced world.

What You See is Based on Your Past Experiences

Your perceptions of the world, including your sight, are based on your
experiences. Without a context to put them in, for instance, the patterns of
light that reach your eyes would be meaningless.

Yet, according to an intriguing study in
<http://www.ploscompbiol.org/article/info%3Adoi%2F10.1371%2Fjournal.pc...
0180> Computational Biology, robots given the ability to process visual cues
as humans do were also fooled by optical illusions. The study suggests,
then, that the way you perceive the world around you is not hardwired into
your brain. Rather, it is continually shaped by what you have seen in the
past.

This concept is alluded to in the movie What <http://www.whatthebleep.com/>
the Bleep Do We Know!? There's a segment when a Native American tribe is
unable to see the first ships approaching the land because it isn't
something that has ever been in their experience before.

This is true, too, for every one of us. Think about how different YOUR
perceptions of the world are from your neighbor's, your mother's, or your
child's. And they are different because each of us has experienced different
things along our journeys. Someone who spends their free time watching
television will, for example, have a greatly different worldview than
someone who spends theirs out in nature, or absorbing different cultures.

So when I look at an optical illusion, I first enjoy it just for the fun of
it. But then I like to dig deeper, and remember that every moment gives you
a new chance to alter and broaden your perception of the world. Ultimately,
how you spend each moment will drastically change what you are, or are not,
able to "see."

If you liked the optical illusion above, its creator, Arthur Shapiro, has a
Web site with many others that is worth <http://shapirolab.net/>  checking
out.

Sources:

<http://scienceblogs.com/cognitivedaily/2008/02/what_illusions_tell_us...
_t.php> Cognitive Daily February 19, 2008

   <http://www.journalofvision.org/8/1/8/> Journal of Vision January 15,
2008, Volume 8, Number 1, Article 8, Pages 1-18

Related Links:

<http://articles.mercola.com/sites/articles/archive/2007/12/18/17000.aspx>
Finally -- Explanations for Many Optical Illusions

<http://articles.mercola.com/sites/articles/archive/2007/10/18/some-of...
ost-striking-images-you-ve-never-seen.aspx> Some of the Most Striking Images
You've Never Seen

<http://articles.mercola.com/sites/articles/archive/2007/02/08/mind-bl...
video-illustrating-how-easily-you-are-deceived.aspx> Mind-Blowing Video
Illustrating How Easily You Are Deceived

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