These squares are actually the same exact color. Hold your finger over the boundary between the two shapes and see them change.
americanscientist.orgThe Cornsweet illusion exploits the brain's lateral inhibition, which creates more contrast between the two objects when they have different colored edges.
These cars look like they're different sizes...
neatorama.com
but in reality they're all the same.
The Ponzo illusion works because our brain judges an object’s size based its perceived distance. The 3rd car seems further away, so it looks much bigger.
These dots seem to change color and orbit the center. But focus your eyes on a single dot - there's no rotating or color change at all.
reddit.com
Stare at the blinking green dot for a few seconds, and see what happens to the yellow dots...
michaelbach.deHard to believe but the yellow dots never actually disappear. Still images are quick to fall from our awareness, especially when they’re surrounded by constantly changing imagery.
Similarly, stare at the cross in the center and watch the blank spot.
This park in Paris looks like it has a giant 3D globe...
But it's actually completely flat.
Which orange circle looks bigger?
Surprisingly, they’re the same size.
The Ebbinghaus illusion exploits our perception of relative size. When an object is surrounded by larger objects, it seems far smaller than it actually is.
Stare at the yellow dot. Then, move your head closer to the screen and the pink rings will rotate.
The Pinna-Brelstaff illusion occurs because of flaws in peripheral vision.
You won’t believe it, but the squares marked ‘A’ and ‘B’ are actually the exact same shade of grey.
dailymail.co.uk
This replica proves it...
upload.wikimedia.orgOur brains automatically adjusts color based on surrounding shadows. Since B is in the shade of the green cylinder, but is still the same color as A, the brain believes that it's a lighter shade of grey.
There are 16 circles hidden in these rectangles. If you can't spot them, stare at the cross.
Look at this swirling for 30 seconds and then look at the Inception photo below.
These cigarettes are actually the same size.
These yellow and blue blocks appear to move one after the other, right?
michaelbach.deWhen the black bars are removed, you’ll see that they’re always parallel and that the black bars are distorting your brain’s perception of movement.
Slowly move your head towards image and the light in the middle will get brighter. Move your head away and the light will become weaker.
This is the dynamic luminance-gradient effect by Alan Stubbs from the University of Maine.
Stare at the center of the colored version, then wait for it to change to black and white.
i.imgur.comInstead of turning black and white, your brain fills in the color it thinks you should be seeing, based on the orange and blue photo. Blink and you’ll be back to black and white.
These are actually just circles, but your brain is tricking you into seeing spirals.
psy.ritsumei.ac.jp
Fix your eyes on the black dot and the grey stripe will turn blue or green.
moillusions.comAs you focus on the dot, the grey begins to merge with the orange background. The moment you look away from the dot, the bar will return to grey.
All the dots on this image are white, but some appear black.
No matter how hard you try, you won’t be able to look directly at the black dots that appear in the circles. Why this illusion works is still a mystery.
By manipulating the human brain and eyes, Brusspup is able to create amazing animations with nothing but a black card.
Brusspup
The dinosaurs’ eyes follow you wherever you go...
BrusspupThe "hollow face illusion" works because our brains perceive objects differently when we recognize them as faces. Although the right eye of the dinosaurs get farther as you move, you brain believes the distance is closer than it really is.
Akiyoshi Kitaoka uses geometrical shapes, brightness and color to create motion illusions. These images are not animated, but the human brain makes them appear so.
psy.ritsumei.ac.jp
Using similar techniques, Randolph is able to create similar, more psychedelic illusions.
flickr.com
Which way is this train moving? Look long enough or blink and your brain will change the direction.
Using clever design, artists like Ibride are able to create 3D art that look impossible.
Brusspup
This looks like a face mask, but look closer...
It's actually an image of two people kissing - not a single person's face.
At first, they look like 3 attractive women...
But flip the image upside down, and you'll see a very different picture.
There are specific parts of your brain dedicated to face perception. But, we rarely encounter upside-down faces, so, when we do, it’s very difficult to spot any distortion.
The photograph of the Leaning Tower of Pisa on the right appears to lean more to the right. In reality, they’re identical photographs and the towers are parallel.
dailymail.co.ukIf two towers are parallel, then from a ground perspective they’d eventually converge into one another. So, when your eyes and brain see two towers that are parallel, they assume that they must be moving apart as they rise into the air and create the resulting illusion.
These horizontal lines appear to be sloping, but look long enough, and you’ll see that they’re parallel to one another.
dailymail.co.ukInitially, it’s difficult to see the grey line between white and black tiles, meaning that the brain fills in the grey as either black or white, creating the illusion that the lines are sloped.
These overlapping circles are actually perfectly round and don't touch at all - can you see past the illusion?
Cover the sides of the hallway with your hands and the animation speeds down, cover the middle and the animation speeds up.
Thanks for reading, and please pass this on to others!
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