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This Is Just Plain Weird!


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#1 Guest_Admin3_*

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Posted 30 October 2005 - 09:24 PM

Go to this link and just follow instructions. It's really weird.

http://www.patmedia....l_illusion.html


I think this should be an example to anyone who is not color cordinated. You know, people who can't pick the right colors to wear. :o

This should be an example to those people who can't pick the right color for their websites. We've all been to them. The one where you can't hit the back button quick enough because your eyes are screaming :) .

#2 chance

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Posted 31 October 2005 - 01:41 PM

Go to this link and just follow instructions. It's really weird.

http://www.patmedia....l_illusion.html
I think this should be an example to anyone who is not color cordinated. You know, people who can't pick the right colors to where.  :o

This should be an example to those people who can't pick the right color for their websites. We've all been to them. The one where you can't hit the back button quick enough because your eyes are screaming :) .

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That’s pretty cool. I think the science behind the illusion is called “Persistence of vision”.

Also once you are able to see the green dot, move your line of vision and there is a second ring of dots only green.

Ah yes, the fluorescent web sites, my eyes are bleeding. :o

#3 Guest_Admin3_*

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Posted 15 December 2005 - 02:07 AM

Someone I know, who studies how the brain works etc... Said that the illusion is more of how your brain processes things. Kinda like when your computer seems to get confused about what to do next and locks up. He said that the vision part gets confused on what color to assign to what's being processed. But instead of locking up, it just tries to correct the problem. But because it can't process to correct it, what it does becomes an error. And the error becomes an illusion.

#4 disruptor

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Posted 14 January 2006 - 05:29 PM

If you stare at a patch of colour, your perception gets shifted toward the complementary colour (probably overuse of the original receptors leaving unused receptors to shoulder the remaining optical "load"). It's not really an error, more like a receptor readjustment. The issue is in the eye, not the brain in the case of the optical illusion mentioned.

There's a convincing set of arguments at the following site against the existence of separate receptors in the eye for different colours, with paired receptor-rods functioning as mini-antennas to pick up specific wavelengths in this theory:

http://ghuth.com/vision/

Posted Image

He considers the retina to be an "array of structural receptor /''nanowires" with three different interreceptor spacings that result from an admixture of two different receptor sizes - the cones and rods". There are therefore no separate rods or cones for different colours.

The physics of light is thus the determining factor in receptor morphology and arrangement. The eye must be as it is because light is as it is, and the "evolution" of the eye can only be approached if the external determinant factor of electromagnetism is taken into account. Simply put, light co-created the eye.

From this perspective (though it is not discussed in his site), a patch of colour produces a response from the appropriately-separated receptor-pairs corresponding to the colour wavelength. But no patch of colour is "pure", hence other (differently-spaced) pairings will also be activated, but to a lesser degree and over a slightly longer period (since the rhodopsin is less-exhausted at the lesser-used receptor sites). The afterimage is the result.

The issue is more complicated in the case of the McCollough Effect, where orientation also matters:
http://www.psy.vande...oughEffect.html
http://neuro.caltech.edu/~seckel/#home

There's loads more optical illusions here:

http://www.eyetricks.com/illusions.htm




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