Interesting Visual Trick

I tried it and what I see when I close my eyes I should not describe. What's the catch? S.M.

Huh? I didn't try closing my eyes...............just rapid blinking. Somehow I think your imagination is kicking in.

Maybe we should change your name to DirtyMind.

{Edit} Nope..................I'm not seeing what you're seeing. Wish I could.

That's amazing!

Now that's a negative image.

And for Bog's sake don't look at the dot in the middle!

Son, you get some strange e-mail. But it is pretty cool!!

I wouldn't have guessed that the human brain was capable of processing a negative.

OK, we got a problem here. My wife tried it and didn't see anything except a white wall. What now?

It's OK. She 's 100% straight. (LOL) S.M.

Which dot is the red one? Or does it not matter?
[colourblind]

The red one is at the top. I don't know if it's going to work for you................although I'd be interested to know what the after image looks like to a colorblind person.

I saw a pigmented image, but if I saw a person coloured in the way I saw, I would probably turn and run.

I can see most colours, they're just "wrong" or not what other people see.

For example, most yellows are green to me, most blues are either purple or black. Red and green... who knows which of the two it actually is

Doesn't really matter, is just to keep your eye focused on one spot and get a steady shot imprinted in your cylinders and cones.

I first detected the color image as I was turning to a blank wall and blinked.

Pretty Cool!

The phenomenon is called afterimage.

I've experienced that before. What was surprising is that the skin tone was filled in accurately.

Is it because of the dots?

I have seen a few of these before and they are pretty neat. The ones I've seen are always this version of the image projecting the color onto the wall, though. I wonder if it works in reverse?

Very surprising. I saw just the face, but the color was correct!

Woof - I just kept my eyes closed instead of blinking, and......

Cool!!!

Converts to full colour image for me, neat.

One of the more impressive visual illusions that show just how amazing our brains eyes and brains are.

I wonder what causes the color...................it looks like a gray scale image.

Your memory. I have argued about this concept in an older thread. (About fancy flat screens or something like that) S.M.

My memory???

Was the older thread just an argument or is is there something to substantiate that claim?

If that's the case, it's really intriguing.

I can't help but wonder what it is you are remembering, since you don't want to share it on here.

How about another logic explanation for the perception on this "trick". Where was this "color information" hidden in a monochrome pic? This is good old proof by contradiction and NO other proof is required.(LOL) D.M. ...err... S.M.

now you know where all those ghost reports come from

GA I just noticed that it doesn't work when the room is dark. I'm in a dark room in front of the computer, and I'm guessing that the brightness of the entire screen compared to the room is throwing it off.

Thanks for inverting the image. It was getting frustrating, only being able to see her for a couple of seconds.

The brain registers and processes the 'shades' of the 'negative'..

"staring at the red dot" converts the image into a colour image.... as this being 'a more realistic image' compared to every day experience. Similar as seeing an image at dusk in very low light: the brain still 'sees' the real colours...(NOT applicable when you are colour blind or have certain mineral deficiencies)

(the same happens if you stare at the green dot)....

The synapses in the brain cells 'are used to' seeing full colour - so they are 'adapting to earlier learning' in regard to life images...

Many years ago I noticed a similar effect if you use a flash of light in a dark room. Prepare a room to be completely dark (any residual light will cancel the effect) and a flash camera - turn off the LCD image and set it to "one flash" use (turn off the "red eye reduction" because it uses two flashes). Turn off the lights, wait at least 30 seconds to allow your eyes to accommodate to the darkness and then use the flash (take a picture). In the first moments you will be "blinded" by the flash but after a few seconds… wow!! One more detail, from the moment you use the flash do not move your eyes or the "after image" will be instantly destroyed.

I find this effect to be cooler because it is a 3D image and (due to the darkness) it lasts longer.

one more for reproducibility

I have to blame it on the Busch..I blink and see black and open my eyes and see wall..Guess I'll never know. I'll go back

to treehugger calender pic.'s got 10 out of 12 to go..

... inverse colors sometimes described as "complimentary."

I don't happen to have any violet or yellow objects in front of me right now, but I recall noticing that they are complementary. If my memory is correct (and there is serious doubt about that as I get older) I remember staring at violet one time and seeing yellow as an after-image when looking away. So decided to try the after-image color and I think yellow now became violet. Others might try it to see if I'm recalling this correctly.

O.K. I just located a yellow, TI TTL book across the room to stare at. It has a blue square as part of the spine. After staring at it for some time and then looking at the neutral off-white wall, the yellow portion did become violet and the blue square was yellow. Blue is close enough in wavelength that it looks yellow, I guess. But since the yellow definitely became violet it leads to the question: If the blue became yellow, why didn't the yellow become blue instead of violet, which it seems to. Brain processing may be in wavelength ranges...? But then how is the eye capable of distinguishing so many colors?

It is an interesting phenomena. Quantum biology, perhaps?

I wonder if we automatically inverse to the opposite on the wheel?

With white inverting to black of course and vice versa.

Possibly.

I just found a "Report" that has some good info. Don't know if it's available to everyone. I can't always tell if I have access because of the university or if it's generically available.

Yeah, it comes right up for me.

{Edit} Man, that's deep. Now I just need someone to break it down into layman's terms for me.

Me too. Why so coy ? As if I'm going to read something that long . Link is fine, but maybe a brief digest might get me a nanosecond beyond click'n'close. Aw, c'mon, anon, that's not fair !

I'm going to bed.... Exactly who is nobody's buisiness.

Ever since I think I was abducted by UFOs I've just not been the same... same as who? same as what?? My doctor said I was suffering from sameness, which I thought was lameness, until I tried going nameless.

Sorry about not giving any "pre" to the link. Most links don't require it, but in this case, as kramarat observed, it isn't your typical "report." Quite detailed and Sesquipedalian. (Computers and the Net are great for discovering and learning new words!)

Heres another interesting one? same routine 30 sec then a blank wall.

Regards JD.

You're staring at a negative image - when you look away your mind corrects the image to a positive image. Just your mind doing what it was made to do - the best computer ever designed!

I didn't see anything, just the wall.