Have You Ever Experienced a Feeling of Déjà vu?
What is Déjà vu and Why Do We Experience It?
Déjà vu is a French expression, which means "already seen, "It is commonly used to show a brain phenomenon. The term was used for the first time by Emile Boirac, a researcher of psychological phenomena.
It is a word also used in the manuals of neurology, psychology, and biology, assuming several meanings. However, different dubious theories, such as those of past lives, supernatural appearances, and common sense, appear to mystify the phenomenon.
So, Déjà vu is when we feel something for the first time. We have the sensation of having already seen or experienced that sensation before. Instead, it is a replay of some scene or moment, but that never happened.
Usually, Déjà vu arises when a specific memory, for some unknown reason, goes to memory in the long run, without passing through the memory in the short term. Some scientists believe that this phenomenon is triggered by a neurochemical action in the brain. The exciting part is that this part is not connected to any experience.
Freud's explanations help us understand Déjà vu. He states: "All phenomena within the psyche are determined, that is, as long as we investigate, we will find the cause of associations. External phenomena, on the other hand, are a mixture of other causes and accidents. In other words, what happens outside of us will not necessarily mean anything."
These assumptions confirm the explanation that Déjà vu manifests itself in a psychological reaction to the transmission of ideas. The sensation is that we have been in those places before that we have already seen those people. But not knowing for sure where, how, and when we had lived in such a situation. Freud sums up: "In succinct terms, Déjà vu's feeling corresponds to the memory of an unconscious fantasy."
Thus, psychoanalysis understands that Déjà Vu is that content which is felt by consciousness, which is an unconscious content that, at another moment, passed through knowledge in a dream or in daily fantasy. Because of repression, content is no longer available to experience, except when it happens.
More Common Than We Usually Thought
This phenomenon of Déjà vu occurs in about 60% of the world population as a vision of the future, since the phenomenon occurs only in exact moments. Never in previous situations, which lasts from 10 to 30 seconds and soon submerge.
One example is the 23-year-old British man who has experienced déjà vu for eight years, a frequency that has intrigued scientists. The researchers doubt that the problem has been triggered by excessive anxiety. The man avoided watching television, radio, and newspapers because he had the feeling of having lived those stories before.
In order to understand the functioning of déjà-vu, researchers at the University of St. Andrews proceeded with a groundbreaking experiment. in trying to "provoke" this sensation of replay in the laboratory. After all, in a typical situation, there is no way to predict when the Déjà vu sensation will occur. That is the reason which made it difficult for scientists to analyze the brain reactions involved in the process.
More than a Memory Process
To the researchers' surprise, the brain mapping of the participants showed that déjà-vu sensation was activated in the frontal areas of the brain. These are areas involved in the decision-making process. Initially, they anticipated that regions associated with memory, such as the hippocampus, would be activated, but that did not happen.
It's like deja-vu, all over again.
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