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Easy. Deja vu – malfunction of various parts of the brain. Here's how it works:
The eyes perceive the information and send it to the special service. brain department for processing. This department processes information, but does not immediately bring it to our consciousness, but first sends it to short-term memory, and then to consciousness. Then we think that the event happened to us before, but in fact this event was simply stored in your memory before you realized it.
Evgeny, thank you for your question. We were asked a similar question once. Here's the answer thequestion.ru [moved here]
A prompt for asking questions will soon appear , so you can immediately see if someone else has already asked your question.
I don't remember the exact wording, but I'll try to explain it in my own words.
And as always, the brain is to blame. There are different parts of the brain and each part has specific tasks. All parts of our brain are connected by neurotransmitters, some of the neurotransmitters are sometimes late, it's like a bug in the program. And it turns out that one part of the brain has already seen what happened, and the second does not, then the same thing comes to the second and it turns out “Deja vu”.
Something like that. I understand that �without exact wording, but in my opinion everything should be clear. In order to show off your mind in front of your friends is quite enough. Good luck.
At the moment, no one can give you an exact answer, because Deja Vu can not be called on purpose. No technique can help you experience this feeling on purpose. A long time ago, I heard the theory that Deja Vu is a kind of out – of-sync in your brain. The fact is that the part of the brain responsible for vision – the visual cortex-is located in the occipital region. Before the image gets there, it passes through several other areas, for example, through the amygdala, which betrays the emotional component of what you see. During Deja Vu, they process one piece of information, but a little asynchronously. Roughly speaking, neurons suddenly fire all together. There's nothing wrong with this if it doesn't happen very often. As you get older, Deja Vu will become less and less common.
Remembering the time when I was interested in this question, I came across a certain theory. The feeling of “Deja vu” is akin to a computer error. When an event occurs, we “close” the wrong contact responsible for “already happened / just happened”, and we have this very feeling. The nature of this error was not explained in this theory.
I admit that these are just the author's fantasies.
Confused, our brains mistake new experiences for old ones. So deja vu is definitely just a false impression, possibly endowed with meaning (like everything that comes from the unconscious).
It was found that epileptics feel deja vu much more often than healthy people. Although this phenomenon is very poorly understood (it is impossible to specifically cause, therefore, you can not put a person in an MRI, provoke deja vu and scan the brain), but we can assume that it is associated with the activation of the temporal lobes of the cerebral cortex. Rather strong activation, which happens, for example, in epilepsy, causes vivid visions, often mystical, or detailed experiences of past events. But what exactly can serve as an impulse is another question.
Deja Vu (dosl) “already happened”, the feeling of a situation when you think that you have already seen it all.
In fact, deja vu is a belatedly loaded anticipation of what will happen next.
That is, deja vu-late clairvoyance.
A person has dreams in which events that occurred during the day are randomly combined. And if in reality there is a situation similar to a dream once seen-there is a feeling of deja vu.
Deja vu is an extremely intriguing phenomenon, so there is a huge amount of mystical judgments around it. Psychological scientists have been trying to study it for many years.
The term itself was introduced at the end of the XIX century by the French philosopher and parapsychologist Emile Boirac. But then the idea of deja vu was a statement of the fact that there is a certain psychological phenomenon, described as a feeling of repetition of something in the past. Sigmund Freud interpreted this sensation as previously seen in a dream, and this, according to his theory, was direct proof of the existence of the unconscious.
Psychologists find an explanation in the fact that this sensation is associated with the so-called false memory or implanted memories. Most likely, it is caused by a given context, which is important for us at the moment for some reason. Our memory stores a huge amount of memories of events that did not actually happen. So deja vu, apparently, occurs just against their background. But to be honest, most of the assumptions about what deja vu is are not related to science, but rather to parapsychology.
In simple terms, this feeling is as if what you are seeing now, a short fragment of what is happening to you, you have already seen it somewhere, experienced it. It's like you know what's going to happen in the next moment, an amazing feeling.
Neuroscientists say that this is due to the fact that signals from one part of the brain reach another through different neurons. When one signal arrives and the second one arrives a fraction of a second later, it feels like you've recently experienced a similar experience.
Sometimes it really does seem that you've already lived through exactly this moment, right up to the point where you look at a light bulb and know that it will soon burn out…(oh, the miracle!) it burns out in five minutes. In general, it feels like a movie that you have already watched and know what will happen next, as if you are going through the same scenario again.
Deja vu is when it seems to us that this has already happened before
It's very simple
The brain perceives more slowly than the eye
And when the brain begins to function with the same force it seems to us that we have seen it
Recently, a group of scientists led by Akira O'Connor tried to recreate this effect in the laboratory. They used methods used in the study of false memories: they read out thematically related words (“bed”, “pillow”, “night”, “blanket”) to the participants of the experiment, without naming the word that unites them — “sleep”. In experiments involving false memories, subjects are then asked if they have ever heard the word “sleep” — and the study participants answer in the affirmative, although this is not the case.
In the new study, the researchers slightly changed the process: they asked if the study participants had heard the c-word, and received a negative answer. The researchers then asked if the subjects had ever heard the verb “sleep” – a question that left the study participants confused: they felt as if they had heard the word, but after the previous question, they realized that this was impossible, that is, they actually felt deja vu. The MRI data showed that a part of the brain associated with decision-making, rather than memory formation, was active at this point. Thus, the experiment showed that this is how the brain checks for errors in its memories — and deja vu is a sign of a healthy memory. However, how accurate and correct this hypothesis is still needs to be verified by further research.
It can be a variant of the norm. But in some cases, it can be a symptom of epilepsy or schizophrenia. If you are very concerned, contact your doctor.
The question is really interesting and interesting to study.
What does deja vu mean? Literally, this concept translates as “previously seen”. The term was first used by Emile Boirac, a psychologist from France. In his work “Psychology of the Future”, the author raised and voiced such moments that researchers had not dared to describe before. After all, no one knew exactly what deja vu was and why it was happening. And if there is no logical explanation for this, how can you touch on such a sensitive topic? It was this psychologist who first called the effect the term “deja vu”. Prior to this, such definitions as “paramnesia”, “promnesia” were used, which meant “already experienced”, “previously seen”.�
Physiologically, it rarely lasts more than 10 seconds.
The scientific study of the phenomenon of deja vu was not so active. In 1878, in a German psychological journal, it was proposed that the sensation of “already seen” occurs when the processes of perception and awareness, which mostly occur simultaneously, in one case or another mismatch due to, for example, fatigue. This explanation has become one of the sides of the theory, which in turn suggests the reason for the appearance of deja vu in the brain's workload. To put it in other words, deja vu occurs when a person is very tired, and peculiar failures appear in the brain.
Judging by the other side of the theory, the deja vu effect is the result of a good rest of the brain. In this case, the processes are several times faster. If we are able to process a particular image fairly quickly and easily, then our brain, at the subconscious level, interprets this as a signal of what we have already seen before. As the American physiologist William H. Burnham, who was the author of this theory, wrote in 1889 – ” when we see a strange object, its unfamiliar appearance is largely due to the difficulty we face in understanding its characteristics. But then, when the brain centers are completely rested, the perception of a strange scene can seem so easy that the appearance of what is happening will seem familiar.”
Later, Sigmund Freud and his followers took up the study of the deja vu effect. The scientist believed that the feeling of “already seen” arises in a person as a result of the spontaneous resurrection of subconscious fantasies in his immediate memory. As for the followers of Freud, they, in turn, believed that deja vu is the result of the struggle of the ” I “with the” It “and the”Super – I”.
Some people explain their deja vu by saying that they have already seen previously unknown places or things in their dreams. This version is also not excluded by scientists. In 1896, Arthur Allin, a professor of psychology at the University of Colorado Boulder, put forward the theory that the deja vu effect is a reminder of fragments of forgotten dreams. Our emotional reactions to a new image can reproduce a false sense of recognition. The deja vu effect occurs when our attention is suddenly diverted for a short period of time during our first introduction to a new image.
There is nothing supernatural in this, according to scientists. It all comes down to one thing, it's just a mistake of our brain, and in a simple way, our brain, like a computer, is only very fast and multifunctional, but it is also subject to podlagivaniem. So these are just “lags” of your brain, and it's better not to lag and put pluses)))
/ sarcasm / Despite the fact that the Matrix is a very complex and well-developed system, it is not perfect and remains a computer program, when the body connected to the Matrix sees the same event in the simulation, it is customary to call it “Deja Vu” in the world, but for a supercomputer it is just a glitch in the program.
By the way, this term also has the opposite concept of “Jamevue”, when an event that is familiar to an object seems completely unknown and unusual.
Deja vu is a state when a person feels that he allegedly experienced this situation once before. No one knows why this occurs yet. But in general, this is a memory error.
I may be wrong about the following:
There is such a thing in the brain-the hippocampus, it divides all the events that occur in a person's life into the past or the present. This memory center instantly recognizes even minor differences in similar images. But when two events are very similar to each other, the brain can fail. This effect is what we call Deja Vu.
But there are several versions. In general, in any of them, the conclusion is the same-the brain is slightly mistaken and it seems to us that we have already passed this.))
There is a simple explanation for this. A person has a certain set of feelings and emotions. When a person repeatedly experiences a combination of certain feelings and emotions, it gives the impression that he has already seen something similar. But to do this, you need a lot of factors to match (mood, emotional state, tactile perception, sound, and so on)
Deja vu is a failure of the memory mechanism. In the case of deja vu, you feel that this has already happened to you, but in fact it really happened to you about half a second ago (if I remember correctly, then for different people it is from 0.2 to 0.5 seconds), but due to some still unclear failure in the memory mechanism, it seems to us that this happened quite a long time ago.
As far as I understand, the current understanding of the mechanism of memorization is still far from perfect, and the mechanism of deja vu is not yet fully investigated
(I clarify: I may not know about some modern research, and perhaps my opinion is already outdated).
There are two popular explanations for deja vu that don't really contradict each other.
Visual signals that go from the nerves of the eye to the back of the brain, which is responsible for visual perception, stop and are processed even before they reach there. For this reason, for example, blind people who have damaged the back of their brain still “see” obstacles in their path and subconsciously dodge them. Although in reality, they are completely blind. This pre-visual processing may vary over time. If there is a small delay, then at the moment when the signal has reached the visual part, we already have some general information about the scene, and it seems to us that we have already seen it somewhere.
Another explanation is psychological. Our memories contained in neurons hold information in the form of associations or tags. Any memory, any visual image is a complex tag system. When we see a scene, our subconscious mind creates this complex tag system, but in some cases not completely. The brain restores the insufficiency of the existing system of associations by comparing the new system with the existing one. As a result, the consciousness can perceive the new augmented system (scene) as already observed once.
In principle, perhaps deja vu is a combination of these two processes. On his VSauce channel, Michael Stevens (youtube.com) quite popularly explains all this.