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Effect of Caffeine on Cognitive Functions

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Caffeine,
a substance found in coffee and tea, is a stimulant that gives an enjoyable
feeling and can be used to combat fatigue and heighten attention, but it also
has adverse effects on cognitive functions of children and adolescents.
Caffeine is popularly integrated in food products as it is believed to increase
cognitive functions in adults when taken moderately and
in improved dosage.

This
psychological stimulant be used to reduce the adverse effects in situations
like military training where users have to experience different stressors such
as sleep deprivation and exposure to dangerous and extreme sea and land
environment. Caffeine mitigated sleepiness and improved marksmanship scores for
Navy SEAL trainees who were subjected to different stressors and dangerous
situations (Lieberman et al., 2002).

            The
Navy SEAL military training revealed that there are beneficial effects on
various behavioral issues and mood conditions. The SEAL trainees, who were
subjected to extreme sleep deprivation and hazardous sea and land environments,
were administered with sufficient doses of caffeine. They improved both speed
and precision during several reaction tests. Caffeine did not interrupt
marksmanship despite some myths that it could reduce stability. The research recorded
improvement on tests like “working memory and learning, repeated acquisition,”
which are believed to be mitigated (Liberman et al., 2002, p. 260). In this
situation, no negative effects were recorded during caffeine intake.

The
military training recorded one interesting result, which is that 60 mg doses of
caffeine did not improve marksmanship and their performance in different skills
but it did not disturb their training performance as well. The experimenters
applied doses of 200 mg of caffeine which were beneficial to improve the
participants’ cognitive function while subjected to extreme environmental
stressors. This is contrary to common beliefs that high doses of caffeine can
interrupt cognitive functions. Other substances that are dangerous and can
disrupt cognitive functions are amphetamine and modafinil.

 
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