Can caffeine help you better recognize positive notions?

Can caffeine help you better recognize positive notions?

A study was conducted a few years ago on a surprising subject: the consumption of two cups of coffee a day would help to better identify some positive notions, such as words for example.
Caffeine is often recognized for its powerful activating effects on the central nervous system. Numerous studies have shown that moderate caffeine consumption can improve the performance of certain simple cognitive tasks, as well as certain behavioral responses.
On the other hand, some research has shown that the latter can also have some addictive effects. What is certain is that caffeine is a substance that is consumed worldwide, in large quantities, through many sodas and caffeinated beverages.
The benefits of two cups of coffee. 
It has been several years since a study led by Lars Kuchinke and colleagues at the Ruhr University revealed that two cups of coffee (200 mg of caffeine) were consumed 30 minutes before a given task was performed. , improves the speed and accuracy of the mental recognition of words with positive connotation, without having any effect on the neuronal process of assimilation of neutral or negative words.
This study was published on November 7, 2012, in the journal "Plos One". Kochinke and his colleagues suggested that this effect was due to the strong dopaminergic effects of caffeine in the brain areas devoted to language.
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