The research was conducted by a team of neuroscientists from Tulane and Tufts universities. Experiencing a frightening event is likely something you’ll never forget. But why does it stay with you when other kinds of occurrences become increasingly difficult to recall with the passage of time?
Neuroscientists think they have discovered the mechanism behind the formation of fear memories in the amygdala — the emotional hub of the brainExperiencing a frightening event is likely something you’ll never forget. But why does it stay with you when other kinds of occurrences become increasingly difficult to recall with the passage of time?, also known as noradrenaline, is a chemical made by some nerve cells and in the adrenal gland. It can function as both a neurotransmitter and a hormone .
In a nutshell, the scientists found that the stress neurotransmitter norepinephrine, also called noradrenaline, facilitates fear processing in the brain by stimulating a certain population of inhibitory neurons in the amygdala to generate a repetitive bursting pattern of electrical discharges. This bursting pattern of electrical activity changes the frequency of brain wave oscillation in the amygdala from a resting state to an aroused state that promotes the formation of fear memories.
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