dreams REM
Dreams are a form of cognitive activity that occur during sleep. Like vivid memories and daytime fantasies, dreams involve visual images in the absence of external visual stimulation. Some dreams are so realistic and well organized that we feel as though they must be real-- that we simply cannot be dreaming this time.Dreaming has always been the subject of controversy. Egyptian papyrus documents dating back to 2000 BC discuss dreams and their interpretations. In ancient Greece the dreamer was believed to be in contact with the gods. In 1900, Sigmund Freud ushered in the modern age of dream research in his monumentally original book The Interpretation of dreams. According to Freud, dreams have a meaning which can be deciphered if one looks deeply enough. In his view, the dreams concerns the dreamers past and present, and it arises from unknown regions within. He saw the dream as significantly analogous to a hysterical symptom. On the surface, they both appear meaningless and bizarre, but they become understandable when understood as veiled expressions of an unconscious clash between competing
Variations in REM sleep also occur with some kinds of mental disorders. In the middle ages nightmares were thought to be the work of demons who were sent to pay sleepers for their sins, or they might try to suffocate you. If you were given to sexual fantasies or behaviour, they might have sexual intercourse with you. Night terrors are similar to nightmares but more severe. Night terrors usually occur during REM sleep. They occur early during the night while nightmares are usually events of the morning hours. The dreamer may suddenly sit up with a surge in the heart and respiration rates, talk incoherently, and move about wildly. The dreamer is never fully awake, returns to sleep, and may recall a brief image of someone pressing on the chest. In contrast to the nightmare, memories of the episode are not vivid. Night terrors are often decreased by a minor tranquillizer at bedtime, which reduces the amount of time spent in stage 4 sleep. Prior to laboratory REM research, it was unknown how frequently Humans dreamed. Some theories even held that dreaming was a signal of mental disturbance. With l
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Approximate Pages = 3 (250 words per page double spaced)
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