Optical illusions. Don't Believe Your Eyes: A Guide to Optical Illusions

Illusion is a trick of the eye.

Types of optical illusion:

optical illusion based on color perception;
optical illusion based on contrast;
distorting illusions;
optical illusion of depth perception;
optical illusion of size perception;
contour optical illusion;
optical illusion "changeling";
Ames room;
moving optical illusions.
stereo illusions, or, as they are also called: "3d pictures", stereo pictures.

ILLUSION OF BALL SIZE
Isn't it true that the size of these two balls is different? Is the top ball bigger than the bottom one?

In fact, this is an optical illusion: these two balls are absolutely equal. You can use the ruler to check. By creating the effect of a receding corridor, the artist managed to deceive our vision: the upper ball seems larger to us, because. our consciousness perceives it as a more distant object.

ILLUSION OF A. EINSTEIN AND M. MONROE
If you look at the picture from a close distance, you see the brilliant physicist A. Einstein.

ILLUSION OF SIDE WALL WITH WINDOW
Which side of the building is the window on? On the left or maybe on the right?

Illusion of bars

Cafe wall illusion

Illusion of the Leaning Tower of Pisa

ILLUSION OF WAVY LINES
There is no doubt that the lines depicted are wavy.

Ship or arch?

ILLUSION - GRAFFITI "LADDER"
Now you can relax and not think that there will be another optical illusion. Let's admire the imagination of the artist.

EFFECT BEZOLDI
Look at the picture and say in which part the red lines are brighter and more contrasting. On the right, right?

ILLUSION OF COLOR CHANGE
Does the color of the horizontal gray line change into the rectangle?

ILLUSION OF A REDUCING SUN
This stunning photo of the sun was taken by the American space agency NASA. It shows two sunspots pointing directly at the Earth.

ZOLNER ILLUSION
Can you see that the Christmas tree lines in the picture are parallel?

ILLUSION-JESUS ​​CHRIST
Stare at the picture for 30 seconds (or more may be needed), then look at a bright, flat surface, such as a wall.

ILLUSION. THREE SQUARE
Sit closer and look at the picture. Do you see that the sides of all three squares are crooked?

ILLUSION. BLACK FIGURES
What do you see in the picture?

ILLUSION. ILLUSION OUCHI
Look at the center of the picture and you will see a "dancing" ball.

Illusion is a trick of the eye.

Types of optical illusion:

optical illusion based on color perception;
optical illusion based on contrast;
distorting illusions;
optical illusion of depth perception;
optical illusion of size perception;
contour optical illusion;
optical illusion "changeling";
Ames room;
moving optical illusions.
stereo illusions, or, as they are also called: "3d pictures", stereo pictures.

ILLUSION OF BALL SIZE

Isn't it true that the size of these two balls is different? Is the top ball bigger than the bottom one?

In fact, this is an optical illusion: these two balls are absolutely equal. You can use the ruler to check. By creating the effect of a receding corridor, the artist managed to deceive our vision: the upper ball seems larger to us, because. our consciousness perceives it as a more distant object.

ILLUSION OF A. EINSTEIN AND M. MONROE

If you look at the picture from a close distance, you see the brilliant physicist A. Einstein.

Now try to move a few meters away, and ... a miracle, in the picture M. Monroe. Here everything seems to be done without optical illusion. But how?! No one painted on mustaches, eyes, hair. It’s just that from afar, vision does not perceive any little things, but it puts more emphasis on large details.

The optical effect, which gives the viewer a false impression of the location of the seat, is due to the original design of the chair, invented by the French studio Ibride.

Peripheral vision turns beautiful faces into monsters.

In which direction is the wheel spinning?

Stare without blinking at the middle of the image for 20 seconds, and then look at someone's face or just a wall.

ILLUSION OF SIDE WALL WITH WINDOW

Which side of the building is the window on? On the left or maybe on the right?

Once again our vision was deceived. How did this become possible? It is very simple: the upper part of the window is shown as a window located on the right side of the building (we look, as it were, from below), and the lower part is on the left (we look from above). And vision perceives the middle, as consciousness considers it necessary. That's all deception.

Illusion of bars

Take a look at these bars. Depending on which end you are looking at, the two pieces of wood will either be next to each other, or one of them will lie on top of the other.

Cube and two identical cups

An optical illusion created by Chris Westall. There is a cup on the table, next to which there is a cube with a small cup. However, upon closer inspection, we can see that in fact the cube is drawn, and the cups are exactly the same size. A similar effect is noticed only at a certain angle.

Cafe wall illusion

Take a close look at the image. At first glance, it seems that all the lines are curved, but in fact they are parallel. The illusion was discovered by R. Gregory at the Wall Cafe in Bristol. That's where its name came from.

Illusion of the Leaning Tower of Pisa

Above you see two pictures of the Leaning Tower of Pisa. At first glance it looks like the tower on the right is leaning more than the one on the left, but the two pictures are actually the same. The reason lies in the fact that the visual system considers two images as part of a single scene. Therefore, it seems to us that both photographs are not symmetrical.

ILLUSION OF WAVY LINES

There is no doubt that the lines depicted are wavy.

Remember the name of the section - optical illusion. You're right, they are straight, parallel lines. And it's a twisting illusion.

Ship or arch?

This illusion is a true work of art. The picture was painted by Rob Gonsalves - a Canadian artist, a representative of the genre of magical realism. Depending on where you look, you can either see the arch of a long bridge or the sail of a ship.

ILLUSION - GRAFFITI "LADDER"

Now you can relax and not think that there will be another optical illusion. Let's admire the imagination of the artist.

Such a graffiti was made by a miracle artist in the subway to the surprise of all passers-by.

EFFECT BEZOLDI

Look at the picture and say in which part the red lines are brighter and more contrasting. On the right, right?

In fact, the red lines in the picture are no different from each other. They are absolutely identical, again an optical illusion. This is the Bezoldi effect, when we perceive the tonality of a color differently depending on its proximity to other colors.

ILLUSION OF COLOR CHANGE

Does the color of the horizontal gray line change into the rectangle?

The horizontal line in the picture does not change throughout and remains the same gray. Can't believe it, right? This is an optical illusion. To verify this, cover the rectangle surrounding it with a piece of paper. This effect is similar to picture #1.

ILLUSION OF A REDUCING SUN

This stunning photo of the sun was taken by the American space agency NASA. It shows two sunspots pointing directly at the Earth.

Much more interesting is something else. If you look around the edge of the Sun, you will see how it shrinks. This is really GREAT - no cheating, good illusion!

ZOLNER ILLUSION

Can you see that the Christmas tree lines in the picture are parallel?

I don't see either. But they are parallel - check with a ruler. My vision was also deceived. This is the famous classical Zolner illusion, which has existed since the 19th century. Because of the "needles" on the lines, it seems to us that they are not parallel.

ILLUSION-JESUS ​​CHRIST

Stare at the picture for 30 seconds (or more may be needed), then look at a bright, flat surface, such as a wall.

Before your eyes you saw the image of Jesus Christ, the image is similar to the famous Shroud of Turin. Why does this effect occur? The human eye contains cells called rods and cones. The cones are responsible for transmitting a color image to the human brain under good illumination, and the rods help a person see in the dark and are responsible for transmitting a low-definition black and white image. When you look at a black and white image of Jesus, the sticks get "tired" due to long and intense work. When you look away from the image, these “tired” cells can’t cope and can’t transmit new information to the brain. Therefore, the image remains before the eyes, and disappears when the sticks "come to their senses."

ILLUSION. THREE SQUARE

Sit closer and look at the picture. Do you see that the sides of all three squares are crooked?

I also see curved lines, despite the fact that the sides of all three squares are perfectly even. When you move away from the monitor at some distance, everything falls into place - the square looks perfect. This is because the background makes our brain perceive lines as curves. This is an optical illusion. When the background merges and we do not see it clearly, the square appears to be even.

ILLUSION. BLACK FIGURES

What do you see in the picture?

This is a classic illusion. Throwing a cursory glance, we see some incomprehensible figures. But after looking a little longer, we begin to distinguish the word LIFT. Our consciousness is accustomed to seeing black letters on a white background, and continues to perceive this word as well. It is very unexpected for our brain to read white letters on a black background. In addition, most people first look at the center of the picture, and this further complicates the task of the brain, because it is used to reading the word from left to right.

ILLUSION. ILLUSION OUCHI

Look at the center of the picture and you will see a "dancing" ball.

This is an iconic optical illusion invented in 1973 by the Japanese artist Ouchi and named after him. There are several illusions in this picture. First, it looks like the ball is moving slightly from side to side. Our brain cannot understand that this is a flat image and perceives it as three-dimensional. Another deception of the Ouchi illusion is the impression that we are looking through a round keyhole at a wall. Finally, the size of all the rectangles in the picture is the same, and they are arranged strictly in rows without apparent displacement.

ILLUSION. ILLUSION OF THE COLOR OF THE WORDS

Say quickly and without hesitation the color of the letters in which the words below are written:

To some extent, this is not an optical illusion, but a puzzle. It is really difficult to name the color of a word, because of the conflict that occurs between the left and right hemisphere. The right half tries to say the color, and the left half reads the word intensely, because of this, confusion arises in our minds.

ILLUSION-GREEN SHADES

You have already guessed that the picture shows not two shades of green, but the same green color.

And you yourself can already explain this optical illusion - the brain perceives them as different shades due to the contrast of the colors next to them. To check this, it is enough just to cover the environment with a sheet of paper.

PICTURE ILLUSION. Glimmering tunnel

There will be no optical illusion here. To appreciate this illusion, you need to look at the center of the ball for some time.

The picture will show its capabilities in a few seconds. You will be able to see the tunnel start flashing, some will see stronger "flashes". The flickering illusion in this picture is related to the black and white vision of the eye. As you know, special cells - sticks - are responsible for it. In the case of their "overvoltage", these cells "get tired" and we see such an illusion.

PICTURE ILLUSION. SEA WAVES ON THE PLANE

Look at the picture and you will see the illusion of a wave, as if the image has come to life. To enhance the effect, you can move your head or eyes around.

This illusion is related to the different colors (white and pink) of the intermediate links between the peas. The white color is seen clearly and brightly, but the pink color, when you do not look closely at it, merges with green and becomes difficult to distinguish. And in the picture there is an illusion that the distance between the peas is changing.

PICTURE ILLUSION. A SPIRAL GOING TO INFINITY

You ask: “Well, what is the illusion behind this picture? Ordinary spiral "

In fact, this is an unusual spiral, and it is not a spiral at all. This is an optical illusion! The picture shows the usual completed circles, and the blue lines create the illusion of a spiral due to the swirling effect.

PICTURE ILLUSION. CUP OF WINE

What do you see in this picture? What is the illusion here?

If, in addition to a goblet of wine, you can see two faces looking at each other in the “legs” of the goblet, you can be congratulated!

To ARTINKA ILLUSION. WAVY SIDES OF SQUARES

Try and guess what kind of illusion is hidden in this picture.

If you see the wavy lines of the sides of the squares, it's not surprising, because it's an illusion! Using a ruler, you can determine that the sides of the squares are straight and even.

OPTICAL ILLUSION. HIGH HAT

Estimate the height of the hat and its width and answer the question: "Are the segments AB and CD equal?"

I really liked this optical illusion. It's incredible, but the height and width of the hat are exactly the same, i.e. segment AB is equal to CD. Due to the fact that the edges of the hat are bent on the sides, and the person's face, on the contrary, is elongated, an optical illusion is created that the height of the hat is greater than the width. This can be explained by the fact that our brain takes into account the size of the surrounding objects. If you measure the segments with a ruler or simply cover the person's face with a sheet of paper, the optical illusion will disappear.

OPTICAL ILLUSION. GRAY DIAMONDS

Are all gray diamonds the same color? Isn't it true that the lower layers of rhombuses are lighter than the upper ones?

The color of all rhombuses is exactly the same. This optical illusion can again be explained by the environment. Our brain compares objects with the environment, and an optical illusion occurs.

OPTICAL ILLUSION. A GIANT CHASES A Dwarf

Do you think the giant will overtake the dwarf?

I will not give an answer to this question. But I know for sure that “fear has big eyes” and that these two figures are exactly the same. Our consciousness has been caught in an optical illusion, due to the corridor going into the distance, it perceives that the distant figure should be smaller.

OPTICAL ILLUSION. BLACK AND WHITE DOTS

The correct answer is 0. There are no black dots in the picture, all dots are white. Our peripheral vision perceives them as black. Because with lateral vision, there is a shift in the picture, but when we look at the same point directly, the optical illusion disappears.

OPTICAL ILLUSION. HORIZONTAL LINES

Can you see the horizontal lines in the picture?

In fact, all lines are not only parallel to each other, but are also horizontal. You can use the ruler to check.

OPTICAL ILLUSION. SPIRAL

Is it a spiral? Is not it?

Take a closer look and you will see an optical illusion, in fact, these are even circles. But due to the geometric pattern and selected colors, the illusion of shifting the lines of circles arises in consciousness.

OPTICAL ILLUSION. PINK LINES

The picture shows pink lines crossing each other diagonally. Different shade, right?

In fact, the pink lines are completely identical to each other, they are the same shade of pink. This optical illusion is based on the contrast of colors surrounding the pink lines.

OPTICAL ILLUSION. STAIRS

I ask you to answer the question: “Where does the staircase lead, up or down?”

The correct answer depends on which side you look at. If you imagine red as the front wall, then up, if yellow, then down.

OPTICAL ILLUSION. LINES

Are the lengths of the left and right vertical segments equal?

You can use a ruler and make sure they are equal. Our vision turned out to be deceived because of the “ticks” at the ends of the segments, you can close them with a sheet of paper and make sure that our consciousness was under their influence.

People have been familiar with optical illusions for thousands of years. The Romans made 3D mosaics to decorate their homes, the Greeks used perspective to build beautiful pantheons, and at least one Paleolithic stone figurine depicts two different animals that can be seen depending on the point of view.

mammoth and bison

Much can get lost along the way from your eyes to your brain. In most cases, this system works fine. Your eyes move rapidly and almost imperceptibly from side to side, delivering scattered pictures of what is happening to your brain. The brain, on the other hand, organizes them, determines the context, putting the pieces of the puzzle into what makes sense.

For example, you are standing on a street corner, cars are passing through a pedestrian crossing, and the traffic light is red. Pieces of information add up to the conclusion: now is not the best time to cross the street. Most of the time this works great, but sometimes, even though your eyes are sending out visual signals, your brain is doing it in an attempt to decipher them.

In particular, this often happens when templates are involved. They are necessary for our brain to process information faster, spending less energy. But these same patterns can mislead him.

As you can see in the checkerboard illusion, the brain doesn't like to change patterns. When small specks change the pattern of a single checkerboard, the brain begins to interpret them as a large bulge in the center of the board.

Also, the brain is often wrong about color. The same color may look different on different backgrounds. In the image below, both of the girl's eyes are the same color, but due to the background change, one appears blue.

The next optical illusion is the Cafe Wall Illusion.

Researchers at the University of Bristol discovered this illusion in 1970 thanks to a mosaic wall in a café, which is how it got its name.

The gray lines between the rows of black and white squares appear to be at an angle, but they are actually parallel to each other. Confused by the contrasting and closely spaced squares, your brain sees the gray lines as part of a mosaic, above or below the squares. As a result, the illusion of a trapezoid is created.

Scientists suggest that the illusion is created due to the joint action of neural mechanisms of different levels: retinal neurons and visual cortex neurons.

The arrow illusion works in a similar way: the white lines are actually parallel, although they don't appear to be. But here the brain is confused by the contrast of colors.

An optical illusion can also be created using perspective, such as the checkerboard illusion.

Due to the fact that the brain is familiar with the laws of perspective, it seems to you that the distant blue line is longer than the green one in the foreground. In fact, they are the same length.

The next type of optical illusions are pictures in which two images can be found.

In this painting, the faces of Napoleon, his second wife, Marie-Louise of Austria, and their son are hidden in the void between the flowers. Such images are used to develop attention. Did you find faces?

Here is another picture with a double image called "My wife and mother-in-law."

It was coined by William Ely Hill in 1915 and published in the American satirical magazine Puck.

The brain can also complete pictures with color, as in the case of the fox illusion.

If you look at the left side of the picture with the fox for a while, and then look at the right side, it will turn from white to reddish. Scientists still do not know what causes such illusions.

Here is another illusion with color. Look at the woman's face for 30 seconds and then look at the white wall.

Unlike the fox illusion, in this case the brain inverts the colors - you see a projection of a face on a white background, which acts as a movie screen.

And here is a visual demonstration of how our brain processes visual information. In this incomprehensible mosaic of faces, you can easily recognize Bill and Hillary Clinton.

The brain creates an image from the pieces of information received. Without this ability, we would not be able to drive a car or cross the road safely.

The last illusion is two colored cubes. Is the orange cube inside or outside?

Depending on your point of view, the orange cube can be inside the blue one or floating outside. This illusion operates at the expense of your depth perception, and the interpretation of the picture depends on what your brain considers correct.

As you can see, despite the fact that our brain does a great job with everyday tasks, to deceive it, it is enough to break the established pattern, use contrasting colors or the right perspective.

How often do you think this happens in real life?

An optical illusion is a deception of the human eye. Observations of some images leave visual illusions in our minds.

Optical illusion is an unreliable perception of certain visual information. A person, looking at an illusion, incorrectly assesses its size or shape, creating a deceptive image in the mind.

The reason for erroneous perception is the peculiarity of the structure of our visual organ. The physiology and psychology of vision allow us to make an incorrect final result, and instead of round shapes, a person is able to see square ones, and large pictures will seem small.

Illusion - an error of visual perception

Optical illusion can be divided into several main types:

• wrong color perception
• misperception based on contrast
• misperception of the size of an object
• misperception of image depth
• twisted illusion
• "changeling"
• illusions that move
• 3D pictures
• optical illusion contour

The human brain is capable of deceptively responding to certain images. It seems that the image moves or even changes its color only due to the fact that the brain perceives the visible light of some pictures.

Moving pictures optical illusion, photo

One of the most popular are the so-called moving pictures. The secret of this type lies in color and contrast perception.

It is enough to look at the center of this picture for a few seconds, then look away at one of the sides of the salad frame of the image, as the picture literally “floats”.

This illusion can be attributed to two types of "curvature of the form" and "moving illusion". Firstly, the uneven placement of the cubes allows us to conclude that the lines are crooked.

However, they are absolutely equal. Secondly, if you move the picture up and down using the slider on your monitor on the right, you can see how the cubes move and run.

Thanks to the textured image, it creates the feeling that the squares in the center of the picture are moving.

Due to the contrasting image of round discs, it seems that they are moving in different directions: clockwise and counterclockwise.

The patterns in the picture are of different sizes and stand out with bright contrasting colors. That is why it creates the feeling that the lines and curves are moving.

What are the pictures for optical illusion for children?

• Visual illusions are one of the most popular intellectual entertainment for children. Observations of such pictures allow you to develop the thinking of the child.
• He tries to understand why it happens that the desired is not presented as real.
• In addition, groups of eye muscles are exercised. This helps to improve blood circulation to the visual channel, which means it serves as a kind of prevention of blindness and other problems.

During the observation of illusions, the child exercises his logical thinking and develops the brain.

The most popular illusions for children:

Such an illusion helps the baby understand which animal is shown in the picture: a cat or a dog. The child analyzes all the external features and remembers the characteristics, in addition, he tries to visually turn the image around, which trains his eye muscles.

This illusion gives the child the opportunity to see a three-dimensional image. In order to do this, you need to bring your face closer to the image, direct your gaze to the middle, scatter your vision for five seconds, and then quickly focus. Such an activity intensively trains the muscles of the eyes and allows the child to develop vision.

Monotonous prints, arranged mirror to each other, allow the baby to find common features of external parameters in different animals.

This image allows you to develop abstract thinking: in the proposed picture you can see a simple branching tree. But if you read the contours correctly, the image of a newborn child will appear to your eyes.

What is an optical illusion hypnosis pictures?

Some images are called “pictures of hypnosis” because they can be misleading and a kind of trance when a person diligently tries to understand what is the secret of the drawn objects and why they move.

There is a belief that if you look at the center of a moving image for a long time, a person imagines how he plunges into a deep tunnel without a bottom and an edge. It is this immersion that distracts him from other thoughts and his trance is comparable to hypnosis.

Illusion pictures in black and white, optical illusion in contrasts

Black and white are completely opposite colors. These are the most contrasting colors of all. Looking at such a picture, the human eye literally “doubts” which of the colors to pay the main attention to and that is why it turns out that the pictures “dance”, “float”, “move” and even appear in space.

The most popular black and white illusions:

The secret of the image is that the dashes on the lines are depicted in different directions and that is why it seems that the lines are not parallel at all.

These images allow us to see two images in one picture. The drawing is built on the principle of contour and contrasts.

In this illusion, for the effect, you need to peer at the red dot located on the image for a long time.

One minute will be enough. After that, the gaze is taken to the side and on any object you see what you previously observed only on the monitor.

What is optical illusion pictures 3d?

This type of illusion allows a person to literally “break the brain”. This is because the picture displays the arrangement of objects in such a way that, firstly, they become voluminous on a plane, and secondly, sometimes they are too difficult to understand.

This picture makes the location of objects incomprehensible to a person: their sides and surfaces. Nevertheless, the picture is perceived in volume.

More complex images involve a person peering into the depth of the picture for a long time. It is necessary to completely disperse and split vision and after a while sharply restore it.

On a completely flat picture, a three-dimensional figure (in this case, a woman) with clear contours will appear.

Optical illusion pictures

Optical illusions of vision are errors that can occur in our vision. The causes of optical illusions are perceptual errors.

While viewing the picture, inexplicable movements, disappearances and appearances may occur. All this is justified by the physiological and psychological aspect of visual perception.

The secret of the illusion is that when we notice a small black object in the center, we do not pay attention to the surroundings.

Not a clear image of the contours allows you to see the elephant instead of four - eight legs.

Contrasting colors and indistinct borders of the picture allow the image to literally vibrate at the moment when we look at it and remain immobilized when we look at something else.

Based on a mirror image with an exact repetition of all forms.

Image Illusion: Dress, Illusion Explained

• The famous network "virus" and the joke "blue or gold dress" are based on the perception of vision, depending on the individual characteristics of each person.
• Once upon a time, everyone received a picture from friends in social networks with the caption “What color is the dress?”. And many of your friends answered this question in completely different ways: either blue or gold
• The secret of the perception of the picture lies in how your visual organ is built and in what conditions you observe this picture.
• In the retina of the human eye in each case there is a certain number of cones and rods. It is the quantity that plays the role of perception: for some it will be blue, for others it will be golden.

It is important to pay attention to the fact of lighting. look at the image in bright light - you will see a blue dress. Leave for half an hour in a dark room and then look back at the picture - most likely you will see a golden dress.

Double pictures optical illusion, what's the secret?

As mentioned earlier, the secret of this illusion is hidden in the complete repetition of the lines of the picture when it is mirrored. Of course, this can not be done in practice with every picture, but if you clearly choose the shape, you get quite an interesting result.

looking at this image, you need to decide for yourself: “What do you see first of all?” Of the possible options, you will see a young girl turned in profile with a feather in her headdress, or an old woman with a long chin and a big nose.

Of the more modern versions of the double image, paintings can be distinguished that simultaneously depict two separate drawings. In such cases, the features of one image are read in different lines.

Video: “Five most incredible optical illusions. Optical illusion"

Optical illusion is an unreliable visual perception of any picture: an incorrect assessment of the length of the segments, the color of the visible object, the magnitude of the angles, etc.

The reasons for such errors lie in the peculiarities of the physiology of our vision, as well as in the psychology of perception. Sometimes illusions can lead to absolutely incorrect quantitative estimates of specific geometric quantities.

Even carefully looking at the "optical illusion" picture, in 25 percent or more of cases you can make a mistake if you do not check the eye estimates with a ruler.

Illusion pictures: size

For example, consider the following figure.

Optical Illusion Pictures: Circle Size

Which of the circles located in the middle is larger?

Correct Answer: The circles are the same.

Illusion Pictures: Proportions

Which of the two people is taller: the dwarf in the foreground or the person walking behind everyone?

Correct Answer: They are the same height.

Illusion pictures: length

The figure shows two segments. Which one is longer?

Correct Answer: They are the same.

Illusion Pictures: Pareidolia

One type of visual illusion is pareidolia. Pareidolia is an illusory perception of a particular object.

Unlike illusions of length perception, depth perception, dual images, pictures with images that are specially designed to provoke the appearance of illusions, pareidolia can occur on their own when viewing the most ordinary objects. So, for example, sometimes when looking at a pattern on a wallpaper or a carpet, clouds, spots and cracks on the ceiling, one can see fantastic changing landscapes, unusual animals, people's faces, etc.

The basis of various illusory images can be the details of a real-life drawing. The first to describe this phenomenon were Jaspers and Kalbaumi (Jaspers K., 1913, Kahlbaum K., 1866;). Many pareidolic illusions can arise from the perception of well-known images. In this case, such illusions can take place simultaneously in several people.

So, for example, in the following picture, which shows the building of the World Trade Center on fire. Many people can see the terrible face of the devil on it.

The image of the devil can be seen in the next picture - the devil in the smoke


In the following picture, one can easily make out the face on Mars (NASA, 1976). The play of shadow and light has given rise to many theories about ancient Martian civilizations. Interestingly, in the later images of this region of Mars, the face is not detected.

And here you can see the dog.

Illusion Pictures: Color Perception

Looking at the picture, you can observe the illusion of color perception.


In fact, the circles on different squares are the same shade of gray.

Looking at the following picture, answer the question: are the chess cells on which points A and B are located the same or different colors?

It's hard to believe, but yes! Don't believe? Photoshop will prove it to you.

How many colors do you enter in the following picture?

There are only 3 colors - white, green and pink. You may think that there are 2 shades of pink, but in fact it is not.

What do these waves look like to you?

Are the brown waves-stripes painted? But no! This is just an illusion.

Look at the following picture and say the color of each word.

Why is it so difficult? The fact is that one part of the brain is trying to read the word, while the other perceives the color.

Illusion Pictures: Elusive Objects

Looking at the following image, look at the black dot. After a while, the colored spots should go away.

Do you see the gray diagonal stripes?

If you look at the center dot for a while, the stripes will disappear.

Illusion Pictures: Changeling

Another type of visual illusion is a shifter. The fact is that the very image of the object depends on the direction of your gaze. So, one of these optical illusions is the “duck hare”. This image can be interpreted both as an image of a hare and as an image of a duck.

Take a closer look, what do you see in the next picture?

What do you see in this picture: a musician or a girl's face?

Oddly enough, it's actually a book.

A few more pictures: an optical illusion

If you look at the black color of this lamp for a long time, and then look at the white sheet of paper, then this lamp will be visible there too.

Look at the dot, and then back away a little and get closer to the monitor. The circles will spin in different directions.

That. features of optical perception are complex. Sometimes you can't believe your eyes...

The snakes crawl in different directions.

Aftereffect illusion

After looking at an image continuously for a long period, there will be some effect on vision for a while. For example, prolonged contemplation of a spiral leads to the fact that all objects around will rotate for 5-10 seconds.

shadow figure illusion

This is a common type of erroneous perception, when a person guesses a figure in the shadow with peripheral vision.

Irradiation

This is a visual illusion that leads to a distortion of the size of an object placed on a background with a contrasting color.

Phosphene phenomenon

This is the appearance of unclear dots of different shades in front of closed eyes.

Depth perception

This is an optical illusion, implying two options for perceiving the depth and volume of an object. Looking at the image, a person does not understand a concave object or a convex one.

Optical illusions: video