How does the brain help you see? Detailed answer

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How does the brain help you see? Detailed answer

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How does the brain help you see?

We can, of course, see with our eyes. But for vision, the brain plays a very important role. From a mechanical point of view, this is what happens. Waves of light pass through the pupil of the eye and form an image on the retina. The retina, or retina, is a carpet-like cell covering on the back wall of the eyeball.

Each of the 130 million cells in the retina is sensitive to light. When light hits a cell, chemical changes occur. These changes serve as the beginning of an impulse in the nerve ending, which enters the area of vision of the brain along the optic nerve.

But that's not all. What the brain sees is very different from the image on the retina. For example, your eyes are rarely stationary. When you stand on the street and look at what surrounds you, your eyes only stop for a moment on the grass, the top of the tree, the cloud, the bird, the squirrel.

The brain does not see a series of snapshots. The visual part of the brain captures each picture and remembers it. He connects these pictures and gives them meaning, so that the whole picture is seen, and not in parts. In the blink of an eye, the seen image is compared with what is in memory. A tree, a cloud, a squirrel - you have already seen all this before. You just need to look at these items to recognize them.

Thus vision involves the use of many parts of the eye, the optic nerve, and all parts of the brain associated with vision and image interpretation. Therefore, the child must still learn to use his sight. Let's say the mechanical part of his vision works fine. But still, he does not see very well. Why? Because he hardly understands what he sees. That is, his brain is not yet fully involved in the process of vision.

Author: Likum A.

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