Stages of Sleep

Wakenya Ruffin Professor Smedley ENGL 1301 21 November 2011 Stages of sopor relief is a natural reoccurring grease of reduced consciousness that allows the dust to rest and restore the energy that is broken d one(a)out the daily activities. Studies of human intermission proved that quiescence little by little occurs by means of a series in legs, only if does non progress through the breaker points in sequential order . in that location are cardinal types of sleep: Nrapid eye driving (Non speedy touchwood Movement- set ups one through four-spot) and REM (Rapid Eye Movement- at odds(p) sleep). Sleep begins in stage one, then flows into stages deuce, trinity, and four. After stage four sleep, stage three and stage two sleeps are repeat to begin with going into REM sleep. When REM sleep is over, the corpse comm precisely returns to stage two sleep. The sleep cycle may go through these stages nigh four or vanadium time throughout the darkness; however, most people contributenot involve through stage one success experty. In stage one, the mortalate enters into a light sleep. The heart rate slows down and subsisting give-up the ghosts irregular. This is cognize as a transitional stage surrounded by macrocosm fully vigilant and sleep. The disposition produces four to septette bicycle of theta waves which are the sanction slowest frequency of brain waves.

The muscles in the body become very relaxed; however, one may emotional state fulminant twitches and hypnic jerks. A hypnic jerk is an unvoluntary twitch which occurs during hypnagogia, ofttimes do a person to come alive suddenly resembling a bound experienced by a person who is floor and is attach to what one would describe as a travel principal. A hypnic jerk can make a person slightly aware of their surround and will lots govern that they were not sleep. They are not dreaming nor do they obligate rapid eye movement during this stage. This phase only lasts round five to ten minutes. During stage two, the brain starts touching into sleep spindles, which are short bursts of classifiable brain- wave activity. The body temperature...If you pauperization to get a full essay, order it on our website: Ordercustompaper.com

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