The brain is very good at "shield" for those feeling normal life. For example, the rotation of the fan buzzing, pressed clothes, chairs support the body to produce a reaction force and so on, if nobody specially for you pointed out, I am afraid they will find it hard to get your attention. You forget they exist? No, they are brain "shield"! For this external shielding effect, we have a special title, it is the "adaptation." Our "adaptation" of the various normal activities, so the brain can ignore their existence.
The brain is very like to help us to delete this "too common" feeling, which is why? The reason is that the brain changes, the need to respond to those things more interesting. No matter how small differences in brain cells will be devoted to find those different therebetween. For basically no change, such as clothing and body, or chair to support the body and so on, they will perceive a waste of time, so the brain automatically adapt and tune into the background of these feelings, so you will concentrate on new things.
Brain did it intentional? Let's make a simple and interesting experiment.
First, we strive to make your eye remains stationary. You can use calipers or help you around the eye is pressed with the thumb and index finger, the eyes relax, maintain eye rest, but to keep a clear head. After a few seconds, the world will gradually blurred in front of you. And, as long as you remain in this state, you will soon discover, could not see anything. Blinked, turned around and turn, relax under your eyes, the world will come back. what happened?!
When you keep an eye does not move, the receptor is identical to the received light. Such light stimulation from the outside world is almost the same level, so the brain does not respond positively to this, thereby weakening the visual world in front of you. However, the light-sensitive receptors and not lazy, they are still in the process information, just under the command of the brain selectively process, shielding those nothing new information. You can move your head or in front of waving arms allow brain cells active again. Your arm, or anything that can cause you to change the visual world produces things that are able to adapt to bring offset shielding effect.
This experiment shows that if something immutable, we'll soon get used to its presence, all the senses are so.
However, this does not sound ah. If I looked at a piece of something or someone, and then thought, staring at someone or something that happens a few seconds. Adaptation will disappear in front of people or things do? Yes, in principle, so to speak. But in reality it does not happen this scene, because a clever evolutionary mechanism integrated into the design of the eye, there is no external resistance, the eye is not motionless, but in the eye socket will not stop fretting. Moreover, the largest rapid eye movement for a second there several times, often accompanied by imperceptible eye muscles twitch. Since the eye is not absolutely still, even if you stare at an object, the eyes can not let things disappear.
Shielding effect on the brain to process information is very useful, and therefore evolution has been retained. Daily life, shielded phenomenon abound. People from out of the dark room, exposed to light will blink, because the eyes have adjusted to the darkness, suddenly exposed to bright light will not people from the lobby into a bright full of smelly toilet where will be the smell of smoked down the toilet, because no adaptation, adaptation and when people do not have so much of a the words and this strange phenomenon is also relevant, such as repeating a word too much, which itself has meaning of the word will be diluted, so that the brain has no feeling to it. Men and women love is the typical example, just men and women together, the feelings are too strong intractable, after getting married, long accustomed to each other, no novelty.
This article has copyright by the daily newspaper http://zhidao.baidu.com/daily Baidu know or provided by content partners authorized without written permission Daily Baidu know, any third party individual or organization may not be copied, reproduced excerpts, mirrors or in any other way use. Baidu know the daily chase responsibility and rights reserved. Contact mailbox zhidaoribao@baidu.com
Article Source: Baidu know daily (http://zhidao.baidu.com/daily)
Original link: http: //zhidao.baidu.com/daily/view id = 2654?