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  #31  
Old July 11th, 2011, 08:23 PM
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Re: Optical Illussions

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  #32  
Old July 15th, 2011, 07:35 PM
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Re: Optical Illussions

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  #33  
Old August 5th, 2011, 07:51 AM
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Re: Optical Illusions

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  #34  
Old May 3rd, 2012, 01:53 PM
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Re: Optical Illusions


How Our Brains Set the World Spinning

If there’s ever excuse to publish an optical illusion as cool as the “Rotating Snakes,” I’ll take it. This illusion was invented in 2003 by Akiyoshi Kitaoka of Ritsumeikan University in Japan, and ever since, Kitaoka and other scientists have been trying to figure out why it works. A new paper by Stephen Macknik at the Barrow Neurological Institute in Phoenix may have the answer.

As you’ll notice, the circles seem to rotate in response to where you look at the illusion. So Macknik and his colleagues tracked the movement of people’s eyes as they gazed at two of these wheels on a computer screen. Their subjects kept a finger pressed on a button, lifting it whenever they seemed to see the wheels move.

Macnick and his colleagues found a tight correlation between the onset of the illusion and a kind of involuntary movement our eyes make, known as microsaccades. Even when we’re staring at a still object, our eyes keep darting around. These movements, called microsaccades, help us compensate for a peculiar property of the eye: if we stare at an object for too long, the signals each photoreceptor sends to the brain become weaker. Microsaccades refresh the photoreceptors with a different input and breath new life into our perception.

Source: http://blogs.discovermagazine.com/lo...orld-spinning/
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  #35  
Old June 12th, 2012, 02:36 PM
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Re: Optical Illusions

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  #36  
Old June 12th, 2012, 02:43 PM
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Re: Optical Illusions

If you look really carefully after a few seconds you'll be able to see that this is a black eye in the making.

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  #37  
Old June 12th, 2012, 02:45 PM
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Re: Optical Illusions

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It the shadow part of the picture too ? amazing
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  #38  
Old June 12th, 2012, 02:47 PM
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Re: Optical Illusions

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  #39  
Old April 9th, 2015, 12:51 PM
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Re: Optical Illusions

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  #40  
Old April 9th, 2015, 04:20 PM
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Re: Optical Illusions

Quote:
Originally Posted by Charchila View Post
Its goig "or"
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  #41  
Old April 9th, 2015, 04:34 PM
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Re: Optical Illusions

Not a parrot.




( Can you see a nude lady ? )



illusion video :
( Written on the wall )
https://www.youtube.com/embed/m86ae_e_ptU

Honda and kool illusion,... ( watch on HD setting )
https://www.youtube.com/embed/zCn4hZiCBJQ

{ Can't find button to convert it, for YT videos to EC approval style }

.

Last edited by Jagmohan; April 9th, 2015 at 04:57 PM.
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  #42  
Old April 12th, 2015, 06:51 AM
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Re: Optical Illusions

Quote:
Originally Posted by Charchila View Post
Down, if i look at the stairs carefully.
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