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whowillsurvive2012.com - Watch the Adam Lambert music video for the 2012 theme song. See 2012, in theaters Nov 13
50 Comments
- thegrantman, on 11/12/2008, -2/+13It's not moving at all.
I can see it;so I have eyes.
I can't detect movement;so the only logical conclusion is:
I have no brain. - sc0ttius, on 11/12/2008, -0/+6Not entirely true... see my post below.
Your cones and rods have limitations. They don't simply pick up the image as it is and send it for processing. These limitations could easily be the cause of several optical illusions. - sirmasterboy, on 11/12/2008, -0/+5That's because you don't just stare. You have to diverge your eyes to make them focus on a spot behind the picture. Once you do a few it becomes muscle memory and becomes simple to do them from then on.
- sc0ttius, on 11/12/2008, -0/+4A little fact about microsaccades... they exist because if our eyes were stable, all input would overload and "wash out" our receptors and we would not be able to perceive anything (Think of when you see a bright flash, you have a temporary blindness and see afterimages. Your cones/rods were overloaded. Regular light would do the same thing over time - like keeping an aperture of a camera open in a dim vs bright room.)
I studied microsaccades in depth at Harvard Med a few years back. I wrote the algorithms to track microsaccades using a dual purkinje eyetracker. Neat thing... look it up.
There are also other theories in terms of optical illusions. Some matter how many receptors are activated and with what information they are triggered and able to resolve. It's not surprising optical illusions can occur at the eye-level because many of the illusions having motion rely on thin lines of black and white which could easily "confuse" the receptors due to resolution limitations. - maeon3, on 11/12/2008, -0/+4The eye does not send a bitmap, this has been proven, the eye sends datastructures containing groups of sensory information in the form of lines, colors, curves, contrasts, intensities and more.
The eye interprets data and literal bitmap data is lost in the transmission from eye to brain.
The illusion of motion (seen in the illusions) occurs during the translation phase when a bitmap is converted to 3d object location/velocity data for consumption of other parts of the mind. - ozydingo, on 11/12/2008, -1/+4"pondering that maybe our eyes have brains inside them"
What is a brain? How does it "interpret data"? Well, one way to answer would be a brain is a complex network of neurons, that "interpret data," or process information, by means of complicated inter- and intra-cellular interactions. The eye has neurons, both descending and ascending. Cells in the eye interact with each other. What is so difficult to believe abut the concept that the eye does some level of processing on incoming visual signals?
Did you know that you can make a decerebrate cat walk on a treadmill? - ozydingo, on 11/12/2008, -0/+3Next time you submit an article, make the title the opposite of the main point of the article. See how many people respond in the comments as if they had read an article supporting the title.
- ozydingo, on 11/12/2008, -0/+3The brain interprets what's there whether or not you're jitterring your eyes enough to fully cover the blind spot. There are other reasons for eye jitterring: http://aplab.bu.edu/research/experiments.html .
- JohnFlux, on 11/12/2008, -1/+3Citation needed - you're just making it up.
The eye is not like a webcam - just relaying a raw signal. A huge amount of processing goes on in the eye cortex.
In frogs, for example, the eye recognizes moving objects, and recognises circles (to look for eyes). That all goes on just within mappings just behind the eye. The brain gets told that more abstract information. - mod4l, on 11/12/2008, -0/+2These comments suck. Didn't anybody read the article?
"The finding rules out the hypothesis that the origin of the kinetic optical illusion is purely cortical." - megamod, on 11/12/2008, -1/+3That's not entirely true. There are at least 2 illusions that I can think of that happen due to the eye.
The blind spot: your have no receptors in the back of your eyes where all the nerve connections to the brain are. There are some brain illusions that are also associated to this also (filling in the gaps of the image its receiving, completing patters and lines that are going through the blind spot) but the blind spot itself originates at the eye.
Color tolerance: Not 100% sure on this one but you have receptors that are supposed to react only to specific colors. when you stare at a color (with a white background) for too long they grow tolerance to it and don't react/send signals to the brain as much as they did originally. when the color goes away (you stare at somewhere else that is completely white) the receptors see a negative lack of that color and you see a negative of the color you were staring at. - inactive, on 11/12/2008, -0/+2Sources?
Not that I'm doubting, it just sounds like some awesome reading. - andrewtheart, on 11/12/2008, -0/+2Just a coincidence
- JohnFlux, on 11/12/2008, -0/+2parax,
ozydingoozydingo replied above, but I'll just add some more to it
I'm claiming that you are making up that you know that the eye does no image processing.
Take for example http://en.wikipedia.org/wiki/Ganglion_cell according to http://www.mcb.harvard.edu/labs/meister/index.php? ...
"For example, we found a type of retinal ganglion cell that remains silent when a rigid image scans over the retina, but fires vigorously when a small patch of the image moves differently from its surroundings (part 1 of the research program). These neurons can discriminate the image motion caused merely by eye movements from that caused by object movements in the outside world (part 3). In unraveling how this sub-circuit works, we found that Nature uses a surprisingly simple solution for an apparently complex computation (part 2)."
The paper goes has quite a bit to say about processing that goes on in the neuron connections just behind the eye. - Murdats, on 11/12/2008, -2/+3depends on if the illusion plays on the shortfalls of the eye or the brain.
- TresTriste, on 11/12/2008, -0/+1Check out the McCollough Effect, an optical illusion that lasts for 24 hours.
http://www.cheswick.com/ches/me/ - BXRWXR, on 11/12/2008, -0/+1So what's wrong with me?
- sc0ttius, on 11/12/2008, -0/+1Most of the dugg comments deal with eye-level processes being a driving factor... which is exactly what that quote infers. Why do the comments suck?
cortical = cortex = brain - parax, on 11/12/2008, -5/+6Optical illusions must be a function of the brain. Our eyes just pass along sensory data, they don't make any interpretation of the data they gather. Our brains try to interpret the world based on the data they receive. Technically, our eyes don't even see the world right-side-up, our brain just flips the image. Our eyes are extraordinarily simple organs, biological lenses which don't even perceive depth or motion, those are all facilitated by brain functions.
- akula89, on 11/12/2008, -0/+1me toos
- 5xSTUN, on 11/12/2008, -1/+2[[ insert Easter Bunny quote from Mallrats here ]]
- threemagic, on 11/12/2008, -0/+1not today, hypnotoad, not today... I closed that page quickly
- sc0ttius, on 11/12/2008, -0/+1aplab?? did you work there? they had the only other eyetracker we had in boston if i remember correctly.
- 5xSTUN, on 11/12/2008, -1/+2Obligatory "schooner" and "Easter Bunny" quotes, etc.
- ozydingo, on 11/12/2008, -1/+2Ah, yes, but did you also know that you are wrong? Pride can be a bitch, can't it?
- ozydingo, on 11/12/2008, -0/+1I did, a few years back did a research internship, and yes we used a DPI eye tracker. Man, the hours I spent on the image stabilizer...enough to make any man go crazy :) I've since shifted my focus to audition, so now I just go crazy listening to tones and speech in a sound booth.
- zadadka, on 11/12/2008, -1/+2"The hellawack shiznit that happens inside your brizzle"
- Dr3w, on 11/12/2008, -1/+2It's a schooner
- noumuon, on 11/12/2008, -0/+1correct me if i'm wrong, but doesn't the eye contain some type of matter from the brain? wouldn't this make it a brainy extension of the brain, and wouldn't it imply that there is some kind of processing going on in the eye?
- EddyRX10, on 11/12/2008, -2/+3Its a sailboat
- Arkz, on 11/12/2008, -0/+1Not really no... Disappointed?
- Firethorne, on 11/12/2008, -2/+2It isn't animated, if thats what you are implying. Although, I agree that they should use a different (lossless) format. The compression artifacts on this are noticable enough to screw with the illusion.
- Rudegar, on 11/12/2008, -1/+1you had to cross your eyes a bit and slowly uncross them the magic eye things that is
- parax, on 11/12/2008, -2/+2The blind spot isn't an optical illusion, it's a lack of sensory input. The illusion is that our brain fills in the gap anyway.
I don't know why you'd think color tolerance happens in the eye either. That's definitely a mental function.
I really think the whole topic is primitive. To ask if our eyes interpret data is like pondering that maybe our eyes have brains inside them, I find that unlikely - kotrin, on 11/12/2008, -1/+1It's caused by scone on.
- insanebrain, on 11/12/2008, -1/+1Wishful thinking :)
- aeling, on 11/12/2008, -1/+1ok i know these things work sometimes, but anyone else notice that the picture is a .gif?
- inactive, on 11/12/2008, -0/+0Caused by your dick infection?
- postitnote, on 11/12/2008, -1/+1Was that supposed to be funny?
- parax, on 11/12/2008, -1/+11. What do you think I'm making up?
2. I'm not sure how I'm supposed to address you seriously when you obviously believe there's a part of the eye called the "eye cortex". If you're referring to the "visual cortex", that's a region of the brain, which means you haven't contradicted anything I've said: all processing happens in the brain.
Yes, you're right. The mappings just behind the eye is where all this recognition goes on. And that thing just behind the eye is called the brain. - noobstomp, on 11/12/2008, -1/+1Thank god someone posted this now i dont have to go look at my cereal box for my daily dose of optical illusions.....
- Arkz, on 11/12/2008, -2/+1Iv actually seen a PC that could run crysis maxed out at 120Hz in 2560x1920 on my travels in my DMC DeLorean, i believe it was a
Core3Fouro e9900 6.6GHz
16GB DDR4 3200MHz
GeForce GTX580 4GB
4TB SATA3 SSD
And ofcourse Windows 3.1 :) - parax, on 11/12/2008, -2/+1@JohnFlux
I'll admit if that research is validated that it would prove the eye itself is capable of identifying motion. Other than that, their research only seems to indicate that the eye has a wider variety of inputs than previously known.
There's nothing convincing that would indicate optical illusions happen in the eye. - slimkevi, on 11/12/2008, -3/+2Without even opening this article, I know the answer is the brain. The eye is just a lens that sends information to the brain for interpretation.
- morepowerr, on 11/12/2008, -2/+1More like there are tiny cells in you eye that move around. And I always guessed that was to prevent polarization's of the eyes
- juzsp, on 11/12/2008, -4/+3Its a computer that can run Crysis!
- MacSuxWindozSux, on 11/12/2008, -4/+2It probably has to do with the blind spot at the center of the eye, where the nerves bunch and leave the eyeball. There's no retina there, so the eye moves around rapidly and the brain interprets what's supposed to be there.
- Haoie, on 11/11/2008, -6/+4All I can say is that no matter how hard I stared, I could never get those Magic Eye things to work for me.
- Anamih, on 11/12/2008, -2/+0Optical illusions, when our brain misunderstand the visual stimulus, which has taken into by our eyes. Such a complex things... as we can't explain any easy way. This is a game between our brain and eyes. Optical illusions are exciting and entertaining things, I am interested in how a picture can become an optical illusions.
- fenderbiz, on 11/12/2008, -4/+1Neither. They are caused by my DI.....!
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