(ORDO NEWS) — Experts have found that bad dreams, which cause fear, have not only a negative, but also a positive side.
With their help, it is possible to “train” the nervous system to some extent. Due to this, she is prepared to quickly respond to a variety of stressful situations that can occur in real life.
Initially, 18 people took part in the study. Specialists used an electroencephalograph to record brain activity in different parts of it directly during sleep.
256 special sensors were attached to the head of each of the participants. Everyone was then awakened several times during the night to ask if they had a bad dream.
Lampros Perogamvros of the University of Geneva noted that depending on the answer given by the participant in the study, a thorough analysis of the recorded brain activity was carried out.
As a result, it was possible to find those two areas that are directly related to the feeling of fear directly during sleep. They are located in the central lobe and anterior cingulate cortex.
The first section evaluates emotions during awakening, and the second prepares the body to properly respond to a certain threat.
Some time later, the experts conducted another experiment. During the week, 89 people carefully wrote down everything they dreamed about, and also noted the emotions that arose.
Next, scientists used magnetic resonance imaging and found out exactly how people can react to scenes of violence shown to them.
The results of the study showed that the more frightened people were in their sleep, the less activation of the insula and cingulate cortex occurred during image viewing.
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