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Dream functions Dreams usually occur in REM (Rapid eye movement) sleep and usually appear four to five times per night. It has been suggested by Strauch and Meier 1996 that some dreams occur in non-REM. However, they may seem vague. The dreams that are remembered are usually those that is close to the stages of waking up. Every body dreams, even blind people, but they are auditory. Dreams can vary in realism, information, colour and emotion. Burne 1998 supposes that dreams last for as long as they would in real life. External factors can also affect dreams even though the brain does not respond to sensory input. Dement and Wolpert 1958 done an experiment where cold water was prayed on to the faces of sleepers. They found that they were more likely to dream about water than those that were not sprayed. Bokert 1970 adds that pre-sleep events can interfere with...

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