Damn cool illusion!

[davidinalameda]

http://www.patmedia.net/marklevinson/cool/cool_illusion.html

[lildreamer316]

1. Fun!

I'd seen it before, but always cool.

[-..__...]

2. One of my favorites.

[Jamastiene]

8. OMG, it won't go away now. Does this mean I have

seen the light? I'm :scared:

Wow, I love mind fucks. Please gimme some more. :hi:

[Orsino]

9. It's Ted Nugent! n/t

[Fox Mulder]

3. What causes the moving dot to turn green?

Why are our eyes messed up like that? :shrug:

[Pacifist Patriot]

6. It's not our eyes, it's our brains. Conservatives see this...

and think it's this...

[ghostsofgiants]

14. It's called an afterimage

http://en.wikipedia.org/wiki/Afterimage

Afterimages are caused when the eye's photoreceptors, primarily those known as cone cells, "tire" from the overstimulation and lose sensitivity. Normally the eye deals with this problem by rapidly moving the eye small amounts, the motion later being "filtered out" so it is not noticeable. However if the color image is large enough that the small movements are not enough to change the color under one area of the retina, those cones will eventually tire and stop responding. The rod cells can also be affected by this.

When the eyes are then diverted to a blank space, the tired photoreceptors send out little signal and those colors remain muted. However, the surrounding cones that were not being used are still "fresh", and send out a strong signal. The signal is exactly the same as if looking at the opposite color, which is how the brain interprets it. For example, a lime green image will produce a purple afterimage, because the lime green color does not tire out the purple photoreceptors.

Since greenish colours are the opposite of reddish colours, the pink becomes a shade of green in the afterimage.

[Pacifist Patriot]

4. Hey! My dad sent that to me yesterday.

Does the fact that it works on me mean I have a normal brain?

[Az]

5. Posted that one the other day

:P

[arwalden]

12. Me Too... But Have You Seen That Jib-Jab Thing??

And Bush wonders if a Brazilian is more than a million!



HA! Every it just keeps getting funnier and funnier every time I hear it!

[El Fuego]

7. This is my theory

I think the green dot is not really there, it's just the after-image you don't see when you are following the pink dots.

[NV Whino]

10. It has something to do with

complementary colors, but darned if I can explain it. Red is the complement of green and vice versa. (Complementary colors are directly across from each other on the color wheel.)

[Taxloss]

11. Very interesting! Thanks! n/t

[redqueen]

13. Wow that's neat!

:D

[Sequoia]

15. That's terrific!

[AirmensMom]

16. Very cool!

Thanks! :bounce:

[bigwillq]

17. Way cool!

:hi:

[eyepaddle]

18. Very cool!

Also, kinda tough on the eyes though!