Why do people have dreams that they have never experienced? There are rumors that there is a connection with a parallel universe

For us humans, sleep is essential. We all spend a lot of time sleeping. On average, in a human life, nearly 1/3 of the time will be spent in sleep.

And when we are sleeping, our minds are not necessarily in a blank state. Many times we have dreams. As the so-called "thinking in the day and dreaming in the night", most of our dreams are in contact with our daily life. related to things.

However, sometimes when we sleep, we will have some messy dreams. In these dreams, all kinds of strange information come, some of which are things that we have never seen before.

So why do humans have messy dreams, dreaming about things they have never seen before?

Human perception of the outside world is actually the result of the brain's processing of various bioelectrical signals. When our auditory system captures external sounds, it will generate corresponding bioelectrical signals, and these signals will be transmitted to the brain through nerves. After the brain analyzes and processes it, we hear sound.

Based on this, a reasonable inference can be made. When humans are sleeping, not all neurons will enter a dormant state. At certain times, some neurons that are in an active state will randomly generate some bioelectrical signals. These signals are Once passed to the brain, the brain tries to understand the information they carry.

And because these signals themselves are chaotic, the brain's processing results are also chaotic, resulting in chaotic dreams.

If this is the case, then this messy dream should be a bug in the human brain, but as far as we know, the human brain has the most sophisticated structure we know, and it stands to reason that there should be no such obvious bugs , so we have reason to suspect that there is a deeper reason for this kind of dream produced by the brain.

How does the brain manage memory?

What’s more embarrassing is that although we humans claim to be able to “go to the sky”, so far, human beings’ cognition of their own brains can only be regarded as knowing a little “fur” at most, so the scientific community has not given any answers to this question. definite answer.

However, some speculations have been made about this. Human memory is divided into several levels, and the memory of the lower level is easy to be forgotten. However, the mark of this memory level is not lifetime.

Normally, the brain dynamically marks memories according to some mechanism.

For example, the memory that is recalled more frequently has a higher level, and vice versa. This view holds that when humans sleep, the idle brain will organize the memory, and in this process, various information is continuously read. and stored, or deleted.

Sometimes, some fragments of memory will enter the human mind, and because the information of these fragments is incomplete, the brain will supplement it. . Humans who are in a sleep state have a greatly reduced response speed to external stimuli. ,

For the human ancestors living in ancient times, it is undoubtedly a very dangerous thing, and the reason why human beings have messy dreams is actually because it can keep the brain active to a certain extent, so that the brain can encounter external stimuli. , you can enter a state of awakening more quickly.

That is to say, when humans sleep, this mechanism will occasionally let the brain process some information at will, just to make the brain have a certain degree of activity.

Therefore, this information can be read randomly in human memory storage. Obviously, when such random information is mixed, it may become chaotic, and the brain's processing results will be bizarre.

After brain supplementation, it can even make humans dream of things they have never seen before.

The brain's self-protection mechanism

For human ancestors in ancient times, nature is full of too many unknown situations, and personal experience is very limited. How to increase one's experience in dealing with unknown situations? The easiest way is to go in the real world, Constantly explore the unknown.

brain test

The human dream-making mechanism will regularly simulate different kinds of unknown scenarios in the dream, so that the brain can rehearse things that it has never seen before, which can effectively increase the brain's experience in dealing with various unknown situations. Instead of "downtime" in some unexpected situations.

In addition, people have put forward a lot of hypotheses that can be called brain-opening. For example, some people think that the reason why things that have never been seen in a dream is because the dream has a connection with a parallel universe, but It should be noted that the above are just assumptions made by people. In fact, they have not been rigorously confirmed, so everyone can take a look at it, and don't take it too seriously.