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Dreams Rem
Beginning of essay
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 b ....
Middle of essay
...., it was unknown how frequently Humans dreamed. Some theories even held that dreaming was a signal of mental disturbance. With laboratory REM research, however, subjects can be awakened after each REM period in order for researchers to extensively sample most mental activity that occurs during sleep. It was discovered that humans, and all mammals--except the echidna or spiny anteater, and perhaps the duckbill platypus-- dream every night. In adult humans these dreams begin about 90 minutes a.... |
| Number of words: 713 |
Approximate pages: 3 |
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