For many years, the phenomenon of déjà vu has been of interest to scientists. Previously, it was assumed that it arises from the fact that the brain begins to give out imaginary memories, so people get the impression that this or that event has already happened. Now, a group of experts from the University of St. Andrews have revealed that the phenomenon has a different origin, reports the portal Hartya 97.
An experiment was conducted in which a group of subjects were named words that stimulate false memories. For example, they talked about night, dreaming, bed, pillow. And then they asked the subjects to repeat the named words, people without hesitation, called the word "sleep", while this particular word did not sound, however, the named words led to him.
Another experiment. The participants were spoken words, and then asked if they heard any word with the letter "C" in the listed group of words. Most of the subjects answered negatively, but when asked directly about the word "sleep", they spoke of déjà vu. Moreover, the phenomenon of deja vu happened to those participants who memorized the entire list of words.
It was also possible to establish that during the onset of deja vu, the prefrontal cortex of the brain, which is responsible for decision-making, is actively active, which suggests that the specified phenomenon depends on how well a person's memory works.