Neuroscientists at the University of Western Ontario said they were able to understand the nature of déjà vu, writes New Scientist.
Scientists have long tried to understand the mechanism of the emergence of a psychological state in which it seems to a person that he has already experienced a similar situation. A theory has arisen that this is due to the ability of the brain to evoke false memories.
Experts conducted a study that used a method to evoke false memories. The volunteers were called words of the same associative series (pillow, night, bed), but they did not say the word (dream) that connects them. After some time, the person, recalling the associative series, also called this word, although it was not voiced to him.
During the second experiment, this associative array was also sounded. But the volunteers were asked if they had heard a word with the letter "s". And all study participants responded negatively. After some time, the participants were asked to voice the associative array, and they remembered that the word with the letter "s" did not sound. And when the volunteers were asked about "sleep", they declared about déjà vu.
After analyzing the processes that occur at this moment in the human brain, scientists have found that with déjà vu, the prefrontal cortex of the brain works in humans. This site is usually "included" in the decision-making process. Therefore, scientists say, the feeling of déjà vu indicates the normal functioning of a person's memory.