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REM & NREM: Sleep Cycles All of us Go Over Each Night
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Posted On :
Dec-06-2011
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Article Word Count :
577
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Sleep plays a major role to maintain a healthy body, it helps us relax our own muscular areas and also rebuild energy for the following day. Sleeping has a few periods called sleep cycles. Most people go through all of these cycles 3-5 periods through the night.
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Sleeping is actually a natural state of rest. It holds true for all members of the animal kingdom. Men spend one third in their lives asleep, this means all of us consume more time for sleeping than other activities. A lot of quotes about sleep expound on its function to maintain your overall health.
Scientists are yet to fully explore the science of sleeping. What actually comes about when you sleep remains unknown, all we understand is that it is essential in fixing weakened body cells as well as in earning energy.
You might have maybe heard about REM and non-REM sleep. REM or Rapid Eye Movement sleep is the time when dreaming happens. The remainder of the portion will be the non-REM sleep, containing 4 fundamental phases which come in cycles. A cycle often takes Ninety to One hundred ten minutes and finishes in a period of REM sleep.
Specialists employ electroencephalogram or EEG to examine sleep cycles. This test is for measuring the brain waves whilst an individual is in bed. It can also help in evaluating the different pattern of brain waves on each period within the Non-REM sleep. Electromyogram or EMG is yet another method. It functions by identifying the impact of each phase to the muscle mass. An electro-oculogram or EOG, on the other hand, is for checking eye movements.
These devices support specialists study the cycles along with their phases. The following are the particular sleep cycles that people undergo whilst sleeping.
Stage 1. This takes place when we first head to bed. At this stage, you will really feel sleepy nonetheless it is still all too easy to wake you up. Slow movements on your eyes signify that you're stepping into a semiconscious state. Here we encounter an unexpected feeling of falling. This is known as hypnic myoclonia or myoclonic jerks. It's a natural muscle contraction that comes about in this stage.
Stage 2. This particular stage is certainly much deeper compared to Stage 1. This is characterized by the decline in the brain waves. There is no more eye movement at this moment. Like the first stage in the sleep cycles, this particular phase takes only a few moments.
Stage 3. This is actually the stage exactly where deep sleep starts. Bodies are within a complete restful state at this time and our eyes are still. The brain settles in to a slow pattern with greater amplitude waves called Delta waves.
Stage 4. This is actually the period when it is really difficult to wake us up. It is also during this period that a majority of circumstances of sleepwalking, sleep talking and even bedwetting manifest. This period continues the lengthiest during the early part of the night time. As the night progresses, it reduces until it nearly fades away by early morning.
REM. Following Stage 4, the pattern turns around then comes back to Stage 1. Then we go into REM sleep where dreaming happens. Our eyes commence to move and respiration will become fast and uneven. Concurrently, the heart rate increases and the brain waves come to be active. As we happen to wake at this stage, we'll likely remember our dream in full detail.
Commonly, we go through these sleep cycles 3-5 repetitions within a night. Going through these cycles helps the body restore sufficient energy for the next day.
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Article Source :
http://www.articleseen.com/Article_REM & NREM: Sleep Cycles All of us Go Over Each Night_115214.aspx
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Author Resource :
Tia Arnold is a nursing aide browsing through quotes about sleep and is wanting to know how sleep cycles work.
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Keywords :
quotes about sleep, sleep cycles,
Category :
Health and Fitness
:
Health and Fitness
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