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Scientists at the University of Oxford in the UK studied the link between serotonin levels in the body and people’s reactions to negative events.
The research results were published in the scientific journal Nature Communications (NatComms).
Serotonin in the brain promotes better interactions between nerve cells. It regulates sleep-wake cycles, appetite, muscle tone, physical function, mood and personality, and also affects anxiety levels and overall mood.
The experiment involved 26 subjects who were given a drug that increased their serotonin levels, and 27 control subjects who were asked to complete a series of tasks that assessed their ability to learn and control their behavior.
The researchers found that increased serotonin levels helped people better control their behavior, especially when presented with negative information. In addition, they found that increased serotonin levels had a positive effect on various types of memory.
Experts suggest that high levels of serotonin in the brain may make people more likely to take risks because it makes it easier to respond to unpleasant events (such as losing money), while responses to positive events remain the same.
“This suggests that serotonin, which has been implicated in depression and the effects of antidepressants, plays an important role in processing negative information rather than enhancing positive responses,” the study authors stressed.
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