Stages of Sleep

Wakenya Ruffin Professor Smedley ENGL 1301 21 November 2011 Stages of sopor Sleep is a natural reoccurring understanding of reduced consciousness that allows the corpse to rest and restore the capability that is befuddled dvirtuosoout the daily activities. Studies of human calm proved that pile little by little occurs through a serial publication in peaks, but does non progress through the stages in resultant order . in that location are cardinal types of calmness: Nrapid eye movement (Non Rapid shopping centre Movement- stages one through four-spot) and paradoxical sleep (Rapid Eye Movement- paradoxical sleep). Sleep begins in stage one, thence flows into stages two, three, and four. After stage four sleep, stage three and stage two sleeps are repeated to begin with going into REM sleep. When REM sleep is over, the body comm precisely returns to stage two sleep. The sleep cycle may go through these stages approximately four or fiv e time throughout the darkness; however, most people cannot get through stage one successfully. In stage one, the body enters into a light sleep. The heart rate slows down and breathing shapes irregular. This is cognize as a transitional stage between macrocosm fully arouse and sleep. The brain produces four to seven bicycle of theta waves which are the sustain slowest frequency of brain waves.

The muscles in the body become very relaxed; however, one may emotional state choppy twitches and hypnic jerks. A hypnic jerk is an involuntary twitch which occurs during hypnagogia, ofttimes create a soulfulness to a waken suddenly resembling a take off experi! enced by a person who is floor and is accompanied what one would describe as a travel one. A hypnic jerk can make a person slightly aware of their surroundings and will lots judge that they were not sleep. They are not dreaming nor do they put one across rapid eye movement during this stage. This phase only lasts astir(predicate) five to ten minutes. During stage two, the brain starts touching into sleep spindles, which are short bursts of distinctive brain- wave activity. The body temperature...If you take to get a full essay, order it on our website: BestEssayCheap.com

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