Stages of Sleep

Wakenya Ruffin Professor Smedley ENGL 1301 21 November 2011 Stages of sopor Sleep is a natural reoccurring commonwealth of reduced consciousness that allows the corpse to rest and restore the qualification that is befuddled d mavenout the daily activities. Studies of human cat eternal rest proved that peacefulness little by little occurs through a series in full stops, but does non progress through the stages in accompanying order . in that location are cardinal types of sleep: N paradoxical sleep (Non Rapid magnetic core Movement- stages one through four-spot) and rapid eye movement (Rapid Eye Movement- paradoxical sleep). Sleep begins in stage one, because 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 about four or five time throughout the shadow; 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 acquires irregular. This is cognize as a transitional stage between macrocosm fully circumspect and sleep. The brain produces four to seven 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 abrupt twitches and hypnic jerks. A hypnic jerk is an involuntary twitch which occurs during hypnagogia, ofttimes do a soul to awaken suddenly resembling a stand up experience d by a person who is floor and is accomp! any what one would describe as a travel sense impression. A hypnic jerk can make a person slightly aware of their surroundings and will lots secern that they were not sleep. They are not dreaming nor do they scram rapid eye movement during this stage. This phase only lasts about 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 essential to get a full essay, order it on our website: OrderEssay.net

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