Human Brain- The Secret of you and me.

When you look out of the window, you think that you see an image with your eyes, as this is the way that you have been taught to think. However, in reality this is not how it works, because you do not see the world with your eyes. You see the image created in your brains. This is not a prediction, nor a philosophical speculation, but the scientific truth.

This concept can be better understood when we realize how the visual system operates. The eye is responsible for transforming light into an electric signal by means of the cells in the retina. This electrical signal reaches the sight center in the brain. The signals create the vision you see when you look out of the window. In other words, the sights you see are created in your brain.

You see the image in your brain, not the view outside the window. For example, in the picture shown on the right hand side, the light reaches the eyes of the person from outside. This light passes to the small sight center located at the back of the brain after the cells in the eyes transform it into electrical signals. It is these electrical signals which form the picture in the brain. In reality when we open the brain, we wouldn't be able to see any image. However, some kind of consciousness in the mind receives electrical signals in the form of an image. The brain perceives electrical signals in the form of an image, yet it has no eye, eye cells, or retina. So, to whom does the consciousness in the brain belong?

The same question can be asked about the book you are reading now. The light coming to your eyes is converted into electrical signals and reaches your brain, where the view of the book is created. In other words, the book you are reading right now is not outside you, it is actually inside you, in the sight center in the back of your brain. Since you feel the hardness of the book with your hands, you might think that the book is outside you. However, this feeling of hardness also originates in the brain. The nerves on your fingertips transmit electrical information to the touch center in your brain. And when you touch the book, you feel the hardness and intensity of it, the slipperiness of the pages, the texture of the cover and the sharpness of the edge of the pages, all within your brain.

In reality however, you can never touch the real nature of the book. Even though you think that you're touching the book, it is your brain that perceives the tactile sensations. In addition, you do not even know if this book exists as a material thing outside of your brain. You merely interpret the image of the book within your brain. However, you should not be tricked by the fact that a writer wrote this book, the pages were designed by a computer and printed by a publisher. The things that will be explained in due course will show you that the people, computers and the publishers in every stages of the production of this book are only visions that appear in your brain, and you will never know whether or not they exist outside of your brain.

We can therefore conclude that everything we see, touch and hear merely exists in our brains. This is a scientific truth, proven with scientific evidence. The significant point is the answer to the question asked above, which this scientific truth has led us to ask;

Who is it that has no eye, but watches sights through a window in our brains and enjoys or becomes anxious from these sights? This will be explained in the following sites.

We acknowledge that all the individual features of the world are experienced through our sense organs. The information that reaches us through those organs is converted into electrical signals, and the individual parts of our brain analyze and process these signals. After this interpreting process takes place inside our brain, we will, for example, see a book, taste a strawberry, smell a flower, feel the texture of a silk fabric or hear leaves shaking in the wind.

We have been taught that we are touching the cloth outside of our body, reading a book that is 30 cm (1 ft) away from us, smelling the trees that are far away from us, or hearing the shaking of the leaves that are far above us. However, this is all in our imagination. All of these things are happening within our brains.

At this point we encounter another surprising fact; that there are, in fact, no colors, voices or visions within our brain. All that can be found in our brains are electrical signals. This is not a philosophical speculation. This is simply a scientific description of the functions of our perceptions. In her book Mapping The Mind, Rita Carter explains the way we perceive the world as follows:


Each one [of the sense organs] is intricately adapted to deal with its own type of stimulus: molecules, waves or vibrations. But the answer does not lie here, because despite their wonderful variety, each organ does essentially the same job: it translates its particular type of stimulus into electrical pulses. A pulse is a pulse is a pulse. It is not the colour red, or the first notes of Beethoven's Fifth-it is a bit of electrical energy. Indeed, rather than discriminating one type of sensory input from another, the sense organs actually make them more alike.

All sensory stimuli, then enter the brain in more or less undifferentiated form as a stream of electrical pulses created by neurons firing, domino-fashion, along a certain route. This is all that happens. There is no reverse transformer that at some stage turns this electrical activity back into light waves or molecules. What makes one stream into vision and another into smell depends, rather, on which neurons are stimulated.1

In other words, all of our feelings and perceptions about the world (smells, visions, tastes etc.) are comprised of the same material, that is, electrical signals. Moreover, our brain is what makes these signals meaningful for us, and interprets these signals as senses of smell, taste, vision, sound or touch. It is a stunning fact that the brain, which is made of wet meat, can know which electrical signal should be interpreted as smell and which one as vision, and can convert the same material into different senses and feelings.

Let us now consider our sense organs, and how each one perceives the world.

It's Not Our Eyes That See,
It Is Our Brain


Because of the indoctrination that we receive throughout our lives, we imagine that we see the whole world with our eyes. Eventually, we usually conclude that our eyes are the windows that open up to the world. However, science shows us that we do not see through our eyes. The millions of nerve cells inside the eyes are responsible for sending a message to the brain, as if down a cable, in order to make "seeing" happen. If we analyze the information we learned in high school, it becomes easier for us to understand the reality of vision.

The light reflecting off an object passes through the lens of the eye and causes an upside-down image on the retina at the back of the eyeball. After some chemical operations carried out by retinal rods and cones, this vision becomes an electrical impulse. This impulse is then sent through connections in the nervous system to the back of the brain. The brain converts this flow into a meaningful, three-dimensional vision.

For example, when you watch children playing in a park, you are not seeing the children and the park with your eyes, because the image of this view forms not before your eyes, but at the back of your brain.

Even though we have given a simple explanation, in reality the physiology of vision is an extraordinary operation. Without fail, light is converted into electrical signals, and, subsequently, these electrical signals reveal a colorful, shining, three-dimensional world. R. L. Gregory, in his book Eye and Brain: The Psychology of Seeing, acknowledges this significant fact, and explains this incredible structure.

We are given tiny distorted upside-down images in the eyes, and we see separate solid objects in surrounding space. From the patterns of simulation on the retinas we perceive the world of objects, and this is nothing short of a miracle.

All of these facts lead to the same conclusion. Throughout our lives, we always assume that the world exists outside of us. However, the world is within us. Although we believe that the world lies outside us, it is in the smallest part of our brain. For example, the CEO of a company might consider the company building, his car in the parking lot, his house by the beach, his yacht, and all the people who work for him, his lawyers, his family, and his friends to be outside of his body. However, all of these things are merely visions formed in his skull, in a tiny part of his brain.

He is unaware of this fact and, even if he knew, would not bother to think about it. If he stood proudly next to his latest-model luxury car, and the wind blew a piece of dust or a small object into his eye, he might gently scratch his itching, open eye and notice that the "material things" he saw moved upside down or to the sides. He might then realize that material things seen in the environment are not stable.

What this demonstrates is that every person throughout his or her life witnesses everything inside their brain and cannot reach the specific material objects that supposedly cause their experiences. The images we see are copies in our brains of the objects that we assume to exist outside of us. We can never know to what extent these copies resemble the originals, or whether or not the originals even exist.

Although German psychiatry professor Hoimar Von Ditfurth is a materialist, he acknowledges this fact about scientific reality:

No matter how we put the argument, the result doesn't change. What stands before us in full shape and what our eyes view is not the "world". It is only its image, a resemblance, a projection whose association with the original is open to discussion.3

For example, when you take a look at the room in which you are sitting, what you see is not the room outside of you, but a copy of the room that exists in your brain. You will never be able to see the original room with your sense organs.

How can a bright and colorful image appear in your dark brain?
There is another point that should not be neglected; light cannot pass through the skull. The physical area in which the brain is located is completely dark, and light cannot possibly penetrate it. However, incredible as it may seem, it is possible to observe a bright and colorful world in this total darkness. Colorful natural beauty, bright sights, all the tones of the color green, the colors of fruits, the designs of flowers, the brightness of the sun, people walking on a busy road, fast cars in traffic, clothes in a shopping mall-are all created in the dark brain.

Imagine a barbecue burning in front of you. You can sit and watch the fire for a long time, but throughout this entire time, your brain never deals with the original of light, brightness or heat from the fire. Even when you feel its heat and see its light, the inside of your brain remains dark and maintains a constant temperature. It is a profound mystery that, in the darkness, the electrical signals turn into colorful, bright visions. Anyone who thinks deeply will be amazed by this wondrous occurrence.

Light is also composed in our brain

While discussing what science has discovered about vision, we mentioned that the light we receive from the outside gives rise to some movements of the eye cells, and these movements form a pattern from which our visual experience emerges. However, there is another point that we need to make: Light, as we perceive it, does not reside outside of our brain. The light we know and understand is also formed within our brain. What we call light in the outside world, which is supposedly outside our brains, consists of electromagnetic waves and particles of energy called photons. When these electromagnetic waves or photons reach the retina, light, as we experience it, begins to come into existence. This is the way light is described in physical terms:
The term "light" is used for electromagnetic waves and photons. The same term is used in physiology, as the feeling experienced by a person when electromagnetic waves and photons strike the retina of the eye. In both objective and subjective terms, "light" is a form of energy coming into existence in the eye of a person, which a person becomes aware of through the retina by the effects of vision.4

Consequently, light comes into existence as a result of the effects that some electromagnetic waves and particles cause in us. In other words, there is no light outside our bodies which creates the light we see in our brains. There is only energy. And when this energy reaches us we see a colorful, bright, and light-filled world.

All colors are formed in our brains

Colors also originate in our brains

Starting from the time, we are born, we deal with a colorful environment and see a colorful world. However, there isn't one single color in the universe. Colors are formed in our brains. Outside there are only electromagnetic waves with different amplitudes and frequencies. What reaches our brains is the energy from those waves. We call this "light", although this is not the light we know as bright and shiny. It is merely energy. When our brains interpret this energy by measuring the different frequencies of waves, we see "colors". In reality, the sea is not blue, the grass is not green, the soil is not brown and fruits are not colorful. They appear as they do because of the way we perceive them in our brains. Daniel C. Dennett, who is known for his books about the brain and consciousness, summarizes this universally accepted fact:

The common wisdom is that modern science has removed the color from the physical world, replacing it with colorless electromagnetic radiation of various wavelengths.5

In The Amazing Brain, R. Ornstein and R. F. Thompson have stated the way colors are formed as follows.

'Color' as such does not exist in the world; it exists only in the eye and brain of the beholder. Objects reflect many different wavelengths of light, but these light waves themselves have no color.6



There is no light and no color outside of our brains. Colors and light are formed in our brains

In the retina in the eye, there exist three groups of cone cells, each of which react to different wavelengths of light. The first of these groups is sensitive to red light, the second is sensitive to blue light and the third is sensitive to green light. Different levels of stimulus to each of the three sets of cone cells gives rise to our ability to see a world full of color in millions of different tones.


In order to understand why this is so, we must analyze how we see colors. The light from the sun reaches an object, and every object reflects the light in waves of different frequencies. This light of varying frequency reaches the eye. (Remember that the term "light" used here actually refers to the electromagnetic waves and photons, not the light which is formed in our brains.) The perception of color starts in the cone cells of the retina. In the retina, there are three groups of cone cells, each of which reacts to different frequencies of light. The first group is sensitive to red light, the second is sensitive to blue light, and the third is sensitive to green light. With the different levels of stimulations of these cone cells, millions of different colors are formed. However, the light reaching the cone cells cannot form colors by itself. As Jeremy Nathans of John Hopkins Medical University explains, the cells in the eye do not form the colors:

All that a single cone can do is capture light and tell you something about its intensity. It tells you nothing about color. we see electrical signals as a bright world, full of color, made up of millions of shades of color, and we enjoy what we see. This is an extraordinary miracle that must be carefully considered.

The cone cells translate the information they get about colors to electrical signals thanks to their pigments. The nerve cells connected with these cells transmit these electrical signals to a special area in the brain. The place where we see a world full of color throughout our lives is this special area in the brain.

This demonstrates that there are no colors or light beyond our brains. There is only energy which moves in the form of electromagnetic waves and particles. Both color and light exist in our brains. We do not actually see a red rose as red simply because it is red. Our brain's interpretation of the energy that reaches our eye leads us to perceive that the rose is red.

Color blindness is proof that colors are formed in our brains. A small injury in the retina can lead to color blindness. A person affected by color blindness is unable to differentiate between red and green colors. Whether an external object has colors or not is of no importance, because the reason why we see objects colorful is not their being colorful. This leads us to the conclusion that all of the qualities that we believe belong to the object are not in the outside world, but in our brains. However, since we will never be able to go beyond our perceptions and reach the outside world, we will never be able to prove the existence of materials and colors. The famous philosopher, Berkeley, acknowledges this fact with the following words:

If the same things can be red and hot for some and the contrary for others, this means that we are under the influence of misconceptions and that "things" only exist in our brains.

The hearing process also operates in a similar manner to the visual process. In other words, we hear sounds in our brains in the same way that we see the view of the outside world in our brains. The ear captures the sounds around us and delivers them to the middle ear. The middle ear amplifies the sound vibrations and delivers them to the inner ear. The inner ear transforms these sound vibrations into electric signals, on the basis of their frequency and intensity, and then transmits them to the brain. These messages in the brain are then sent to the hearing center where the sounds are interpreted. Therefore, the hearing process takes place in the hearing center in essentially the same way that the seeing process takes place in the seeing center.

Therefore, actual sounds do not exist outside our brains, even though there are physical vibrations we call sound waves. These sound waves are not transformed into sounds outside or inside our ears, but rather inside our brains. As the visual process is not performed by our eyes, neither do our ears perform the hearing process.

All Smells Occur In The Brain

If someone is asked how he senses the smells around him, he would probably say "with my nose". However, this answer is not the right one, even though most people would instantly conclude that it was the truth. Gordon Shepherd, a professor of neurology from Yale University, explains why this is incorrect; "We think that we smell with our noses, [but] this is a little like saying that we hear with our ear lobes."9

Our sense of smell works in a similar mechanism to our other sense organs. In fact, the only function of the nose is its ability to act as an intake channel for smell molecules. Volatile molecules such as vanilla, or the scent of a rose, come to receptors located on hairs in a part of the nose called the epithelium and interact with them.

The result of the interaction of the smell molecules with the epithelium reaches the brain as an electric signal. These electric signals are then perceived as a scent by the brain. Thus, all smells which we interpret as good or bad are merely perceptions generated in the brain after the interaction with volatile molecules has been transduced into electric signals. The fragrance of perfume, of a flower, of a food which you like, of the sea-in short all smells you may or may not like-are perceived in the brain. However, the smell molecules never actually reach the brain. In our sense of smell, it is only electrical signals which reach the brain, as happens with sound and sight.

Conseqently, a smell does not travel in any particular direction, because all smells are perceived by the smell center in the brain. For example, the smell of a cake does not come from the oven, in the same way that the smell of the dish does not come from the kitchen. Likewise, the smell of honeysuckle does not come from the garden and the smell of the sea, some distance away from you, does not come from the sea.

All of these smells are sensed at one point, in a related area of the brain. There is no concept of right or left, front or back, outside of this sense center. Although each of the senses seem to occur with different effects, and may appear to be coming from different directions, they all in fact occur within the brain. The smells which occur in the smell center of the brain are assumed to be the smells of outside materials. However, the image of the rose is generated in the sight center and the smell of a rose is generated in the smell center. If there is a genuine smell outside, you can never reach the original of it.

It may be instructive to consider dreams in order to understand that smell is only a sensation. When people dream, in the same way that all images are seen very realistically, smells are also perceived as if they were real. For example, a person who goes to a restaurant in his dream may choose his dinner amid the smells of the foods that are on the menu; someone who dreams of going on a trip to the sea side senses the distinctive smell of the sea, and someone who dreams of a daisy garden would experience, in his dream, the pleasure of the magnificent scents. Likewise, someone who dreams of going to a perfume shop and choosing a perfume would be able to distinguish between the smells of the perfumes, one by one. Everything in the dream is so realistic that when the person wakes up, he or she might be surprised by this situation.


The Sense Of Touch Also Occurs In The Brain

The sense of touch is one of the factors which prevents people from being convinced of the aforementioned truth that the senses of sight, hearing and taste occur within the brain. For example, if you told someone that he sees a book within his brain, he would, if he didn't think carefully, reply "I can't be seeing the book in my brain-look, I'm touching it with my hand". Or, if we said "we cannot know whether the original of this book exists as a material object outside or not", again the same superficially minded person might answer "no, look, I'm holding it with my hand and I feel the hardness of it - that isn't a perception but an existence which has material reality".

However, there is a fact that such people cannot understand, or perhaps just ignore. The sense of touch also occurs in the brain as much as do all the other senses. That is to say, when you touch a material object, you sense whether it is hard, soft, wet, sticky or silky in the brain. The effects that come from your fingertips are transmitted to the brain as an electrical signal and these signals are perceived in the brain as the sense of touch. For instance, if you touch a rough surface, you can never know whether the surface is, in reality, indeed a rough surface, or how a rough surface actually feels. That is because you can never touch the original of a rough surface. The knowledge that you have about touching a surface is your brain's interpretation of certain stimuli.