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One may define dreams as a series of events and/or images
that our mind ‘sees’ when we are sleeping. The events and
images may follow a sequence or may be totally unrelated.
A person sees dreams when his eyes go through REM (rapid
eye movement).
If dreams are a combination of such abstract things as
emotions and memories how is it possible that we remember
that our dreams so vividly? This is possible due to the
cortex of the brain. The cortex is the brain’s most
sophisticated part. It is responsible for several
functions, including voluntary movements. It is as active
when we are asleep as when we are awake. It is responsible
for the recording and the replaying our dreams.
This has happened to all of us, at one time or another.
You wake up within a very short time of having fallen
asleep, a little confused, because you had a vivid dream.
And depending on what you have seen, you feel depressed or
happy or simply try to remember something. This condition
is caused due a high level of acetylcholine, which is a
chemical responsible for transmission of nerve impulses. A
type of dreams are termed as lucid dreams when the dreamer
is aware that he or she is dreaming and can control the
events to a certain extent. Hey, doesn't that sound like
making your own movie!
Personal experience will tell you that not all dreams are
pleasant ones. Yes, bad dreams or nightmares are something
we are all familiar with. A nightmare is a dream that
terrifies a person. It is often accompanied by a feeling
of something pressing down upon the chest of the sleeper.
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