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What's Your
Biggest Fear?
ByKimSoo-yeon
PeoplewithdamagedamygdaloidbodiespossessUrbach-
Wiethe disease. They do not know exactly what they feel
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and cannot judge what is desirable. In contrast, if we
owadays, there are many kinds of phobias due
electrically stimulate the amygdaloid body, then a phobic
to events like the Japanese earthquake. Phobias
reactionwillhappen.
may not only include a fear of disaster, but also
Reactions of phobia can even be sculpted in our
thingslikestagefrightandacrophobia.
brain because the amygdaloid body functions with the
We feel phobias everyday and there are a lot of talks
hippocampus, which is located on the underside of the
about people with phobias fainting or their bodies
cerebrum and controls the saving of memories. This
becomingparalyzedwhenexperiencingthisphenomenon.
meansthatevenwhenwehaveahighlyscaryexperience,
However, most of us do not know why these symptoms
thememoriescannotdisappeareasily.Itisanevolutionary
happenorhowthesebodilyreactionsareproduced.Inthis
change in which getting out of danger leaves a fear
column,wewillprovidesomeoverviewaboutphobias.
embeddedinourmemories.
WhatProducesPhobias?
What Reactions Happen in Our Bodies When We
The sense of phobia or fear is related to the amygdaloid
FeelPhobias?
bodylocatedontheleftinteriorofourbrains.Ifthisside
Fainting and temporary paralysis happens when we
of the brain is damaged, then we cannot feel a sense of
have huge frights. Usually, when we feel phobic, the
fear or this kind of feeling is decreased. For example, a
sympathetic nerve functions quickly, secreting the
mouse with a damaged amygdaloid body reacted to cats
hormone epinephrine, which causes our heart rates to
withoutfearandevencrawleduponthecat’sbody.
increase and blood vessels to magnify. Then, when the
bloodpressuredecreases,itreducesthequantityofblood
flowingtothebrain.
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Whenbrainscannotgetenoughblood,theyloseoxygen
and cause people to faint. Therefore, if we experience
excessive phobia, body becomes extinct with the outside.
In addition, when there is stimulus, the amygdaloid
body causes people’s pupils to become bigger and show
defensivebehavior.
HowDothePhobicSymptomsHappen?
Ko Jae-hong, a professor of the Department of
Psychology at Kyungnam University, said, “If there is a
relationshipbetweenbehavior,emotionandunconditioned
▲ Redpointindicateamygdaloidbody
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