Have you ever had such a wonderful feeling at some moment in your life: the scene in front of you, the thing you are experiencing, or the place you are in, as if you have experienced it before? But when you try to dig deep into the memories and try to explore the details of these experiences, you find that everything is like a fog, blurry, and you can't recall it. Don't panic yet, this is not a mysterious reappearance of the memories of a past life, this wonderful feeling of déjà vu has its own name in the field of psychology -Déjà vu。

Déjà vu is an extremely common physiological phenomenon. According to statistics, about two-thirds of people have experienced this wonderful feeling in their lifetime. Moreover, the frequency of déjà vu is not static, it is inextricably linked to age. The American Opinion Center at the University of Chicago conducted a large-scale survey study in 25, 0, and 0. The results showed that young people aged 0 to 0 years seemed to be more likely to "encounter" déjà vu, and after the age of 0, the incidence of déjà vu gradually decreased. This may be because young people's lives are full of more new experiences and explorations, and the brain is more likely to have this wonderful feeling in the process of constantly receiving and processing a lot of new information.

Although déjà vu is a frequent occurrence in life, it is elusive. It is difficult to study it in depth and detail. The sense of déjà vu always comes and goes suddenly, like a gust of wind, fleeting and difficult to capture. Human beings have been studying déjà vu for a hundred or two hundred years, and many scientists have tried to unravel its mystery, but to this day, we still have not fully understood the real reason for its occurrence.

In 30, psychiatrist Alan Brown published a book called "The Sense of Déjà vu Experience". In this book, Brown summarizes the various interpretations of déjà vu over the past 0 years, and there are more than 0 of them. These explanations can be described as varied, and some of them are metaphysical, such as telepathy, past life memories, etc. Of course, there are many conjectures that come from the rigor of scientists. Among the many conjectures, memory confusion is a well-known one.

According to the theory of memory confusion, similar environments are often the trigger for a sense of déjà vu. For example, walking on a street, the small shops on both sides of the street, the sounds around you, etc., these familiar elements may evoke a small part of your past memories. But this part of the memory is incomplete and not enough for you to recall in its entirety what happened before. At this point, the brain falls into a wonderful state, producing a feeling that is both familiar and unfamiliar, which is what we call déjà vu.

A study in 2019 years added a touch of mystery to the sense of déjà vu. The study suggests that déjà vu may even give people a premonition of what will happen in the future. However, this idea is not yet scientifically substantiated, perhaps it is just a coincidence, or perhaps there is a deeper mystery hidden in it, and it is unlikely that it is the real cause of the sense of déjà vu.

In order to delve deeper into the mysteries of déjà vu, scientists are conducting various experiments. In 2016, Yakela O'Connor, a researcher at the University of St. Andrews in the United Kingdom, and her colleagues conducted an ingenious experiment. At the beginning of the experiment, they read a large number of sleep-related words to the volunteers, such as bed, pillow, tiredness, etc., but did not mention the word "sleep".

O'Connor then asked the volunteers if they had heard a word that began with the letter S, and the volunteers shook their heads and said no. O'Connor then conducted a second round of questioning, asking volunteers to recall if they had ever heard the word "sleep." Since volunteers have already been asked a similar question once, they may feel a sense of déjà vu when they hear it again.

At the same time, O'Connor used an MRI machine to scan the volunteers' brains. Surprisingly, the scans showed that areas such as the hippocampus, which are associated with memory, were not activated, but rather the frontal lobe region, which is associated with making decisions, was activated. Based on this, O'Connor believes that the reason for the perception of déjà vu is that the brain is checking for errors in memory, and that the sense of familiarity we feel is actually the brain avoiding false memories.

What we know about the brain is just the tip of the iceberg. The brain, this amazing and complex organ, has so many mysteries waiting to be explored. Both the theory of memory confusion and O'Connor's idea that the brain examines memory errors are just conjectures from scientists about the causes of déjà vu.

With the rapid development of science and technology, we have reason to believe that in the future, with the continuous progress of brain imaging technology, human research on the brain will achieve more in-depth results. One day, we will be able to completely unravel how the brain works, and we will be able to successfully solve the mystery of the perception of déjà vu. At that point, this mysterious and wonderful feeling will no longer be a puzzle in our hearts, but a key to our deeper understanding of ourselves. Let's look forward to that day together.