After the brain receives the signal, why does it express it through dreams?

The conscious brain area of ??our brain. The main function is to distinguish the authenticity of external information stimuli. When people sleep, the activity of conscious brain areas decreases, and the ability to distinguish external things from reality is also weakened. Usually received in all ways believed to be true. This is why dreams feel so real to us. But in dreams, people still act consciously. When we receive some kind of surprise or stimulation in a dream, the conscious brain area believes that when it is actually received, it will stimulate the brain to send out dangerous signals. As a result, we usually wake up. Because dreams are too real, but no matter how real they are, the essence of dreams is illusory. It's just that the conscious brain thinks that the illusion is real, so of course it won't die in the dream.

This is also related to the physiological characteristics of human beings or any other species. In other words, it is one of people's instinctive self-protection abilities. Generally speaking, you cannot kill yourself by holding your breath. No matter how patient you are, you can't do this. What would happen if you could hold your breath forever? After you fainted on your own, you started breathing on your own again. And "knocking you out" is actually a self-protection mechanism to prevent you from continuing to try to hold your breath!

I often have strange dreams. The scene in the dream is vivid in my mind. It's like it's true, I had this dream a few days ago. In the dream, I visited a friend's home abroad, a city with stone buildings in Europe. When I came out of my friend's house and looked at the street outside, I first walked down the street, turned right, and climbed to the entrance of a community. Many people were sitting next to the pond. From there, I climbed up to the beautiful European-style building. The entrance sign said What did I forget while writing? If you see it clearly in your dream, you will regret it when you wake up. You must remember what you wrote next time. Is the scene I dream about still a dream? Looking out from this building, there are buildings outside the community. Just like the reporter played by Gregory on a Roman holiday, he used his weird face to trick the princess into being eaten and stretched out his hands. It was big and tall, more than ten meters high. Many people ran out and eventually got lost. Before I could get back to my friend's house, I had no choice but to run away.

For example, when dreaming, you suddenly fly into space and move with spaceships and airplanes. Sometimes there will be many colorful pictures, banners or various texts in the sky. Sometimes the sky is filled with all kinds of airplanes. Sometimes I dream of flying over ditches or tall buildings. Sometimes in a fire, sometimes running in a car or on a plane. In some dreams, when you are clearly at home, you may be thousands of miles away in the blink of an eye. Sometimes the people you meet will become everyone's identity in a while. Sometimes I dream about places I played or visited when I was a child. But those places obviously don't exist now and have become very big. Why is the dream still the same as before? Sometimes that person has been dead for many years, but in the dream he is also eating, drinking and having fun with him. Sometimes Meng often fights with people, or even kills people, and is chased. Sometimes, in critical moments, you can’t move, hide, or hide even if you want to run. Many of these dreams are unimaginable and unknown.