Sleep My Pretty.....
Sleep: A condition of body and mind such as that which typically recurs for several hours every night, in which the nervous system is relatively inactive, the eyes closed, the postural muscles relaxed, and consciousness practically suspended. ( Websters) Sleep Patterns for a Typical Sleeper: I n the normal adult there are two main stages of sleep that alternate at about 90-minute intervals. Rapid eye movement (REM) sleep can be roughly described as a period when the brain is active and the body is paralyzed (except for eye movements, middle ear ossicles, and respiration). In non-rapid eye movement (nonREM or NREM) sleep , the brain is less active but the body can move. Non-REM sleep is composed of four stages that are differentiated on the basis of EEG characteristics. When normal individuals first fall asleep, they enter Stage 1 (sleep drowsiness) and then progress through Stages 2, 3, and 4 of NREM sleep. Stages 3 and 4 (deep sleep) are often called slow wave sleep o...
