This seems a bit exaggerated, because the images that we see throughout the day did not disappear i

When we put the clothes in a relatively short time we are aware of the sensation of clothing in contact with skin. But unless a piece is misplaced and make nuisance, immediately forgetting them. Something similar happens with the noise. The background noise of the bar, the computer fan noise, the noise of the street, unless you are particularly high or become bothersome ignored by us. With three quarters of the same odors. Except particularly smelly odors we settled immediately scents or smells that surround us.
What happens is that the nervous system have well prepared to detect alterations, changes, irregularities. Anything that is different launching groups of neurons that demand our attention. Be aware of the monotony is a waste of neural activity. Thus, the brain handles things interesting or potentially dangerous and ignores normal.
For though we are not aware, the view is exactly indian jewelers supply the same. What we see are the best in the visual indian jewelers supply field abnormalities. This is clear when we look at a landscape and still perceive any sudden movement. There is a download on our attention is focused on what immediately breaks the static image.
This system is extremely useful for hunting animals because they do not need to be aware of everything that covers the visual field. Just have to wait to break the stillness as it was fully conscious and able to devote full attention. And that's indian jewelers supply something they know very well taken, many of which remain motionless when they smell predators are nearby. They know that when they are detected and begin to move the race to save his life.
Again, the mechanism works in the retina is adaptation. The cells of the retina send signals to the brain when we look. But if the stimulus that are not modified, this signal was becoming more and more weak to disappear. Like the sensation of touch.
This seems a bit exaggerated, because the images that we see throughout the day did not disappear indian jewelers supply from our consciousness but are static. But the fact is that, although we are not aware, the image you see is always in motion. If the landscape indian jewelers supply is not moving, so do our eyes. I do constantly.
Actually the eye not keep still for two reasons. The first is that as we see everywhere. In the center of the retina where the image is formed with greater detail and accuracy. Just what happens is that the center of the retina have more cells are sensitive to light. If we look when we read clearly detect a pair of letters, the letters that make up the rest of the word suspect, but if we look, we lose sight of the original lyrics. indian jewelers supply And the rest of the text is there, we see, but we can not read it unless you move the view. Therefore, the eye was making a constant indian jewelers supply movement, to be "sweeping" the image so that the most sensitive area of the retina happens everywhere.
Such movements are called sacàdics and last between 20 and 200 milliseconds. Cleverly, the brain ignores the images generated while the eye moves, so we have the perception of a static picture. But enough of eyes peered someone to perceive movements indian jewelers supply sacàdics. At the same time, he can see our own, but neither is aware of its own.
And then there is another movement added the microsacàdics. They are much smaller than for the eye to prevent what he said at first, that the cells of the retina become accustomed to the image and stop sending nerve stimuli to the brain. Microvibració that make a once per second to generate a change in the receptors of the retina and not stop sending signals. These movements are now much smaller and invisible to the naked eye.
So while we are just watching, indian jewelers supply our eye is doing a lot of work. Even when Badem staring, there is much more activity than we think. And luckily we do not realize, because otherwise simply would look very tired!
Very interesting !! Now I know I have a noise threshold "flashy care" much lower than the sight or touch !! One question, vision makes the brain work hard? You wonder why sometimes in situations of very tired, I closed indian jewelers supply my eyes it looks like recuperesis forces, well, as if diverted to other energy systems (ha, ha, I'm too nerdy ...) 12.04.07 indian jewelers supply 8:22
CARQUINYOLIS. Man, we are primarily visual animals and brain activity devoted much of jobs involved in vision. Much more than the OID