The Importance of the NREM and REM and NREM Sleep Cycle

portrait of a young man sleeping on the grass
REM sleep cycle is a continuous study in the specialty of health science and human psychology.) This Buzzle write-up provides an insight into the cycle of the sleep routine. When someone sleeps, he shuts his eyes and falls into a trance of an increased anabolic condition. The sleep he likes, may or may not comprise fantasies. But if this sleeping individual encounters complicated dreams with regular twitching of feet and hands, and constant motion of their eyes with a diminished capacity to respond to a stimulus, the expression coined for such a sleep is REM sleep. A standard sleep is split into two phases of sleep:

  • NREM Sleep (Nonrapid eye movement sleep)

  • REM Sleep (Rapid eye movement sleep)

Normally, a REM cycle shows symptoms of breathing, and twitching eye motions, higher blood pressure, and an abrupt loss of muscle tone. The time of the sleep cycle is connected with fantasies, which take over the sleeping individual for that specific length of time. The REM cycle is also called a partial wakefulness condition constituting 20-25 percent of a whole sleep cycle.

Sleep Cycles During REM

A typical sleep is split into various phases comprising the REM and the NREM sleep cycle.) Every phase of a sleeping cycle is dependent on the amplitude and frequency of their brain waves generated during sleep. A full sleep cycle is all about 90-100 minutes plus a standard sleep comprises 4-5 total sleep cycles. A sleep cycle includes about 5 phases, where the initial 4 sleep cycles ensure the NREM sleep period. The NREM cycles finish after and reverse again to be followed closely by the REM cycle. Considering that each sleep cycle is carrying 100 minutes to end, the span is roughly 10 minutes ). Nonetheless, this isn’t a predetermined duration, since the sleep cycle span starts to grow with time once the fourth and third phases of NREM begin to wane. The maximum length of a sleeping cycle of REM is roughly one hour, which occurs after a few rounds of sleep cycles.

  • Eyes begin feeling thick and start to feel tired.
  • A transition state between consciousness and sleep is attained.
  • Eye movements come to a block and there is a slow decline in the temperature of their human body.

Slow wave sleep — NREM Stage 3: Deep Sleep

  • This phase is your entrance point to profound sleep (also called delta sleep).
  • The brain waves slow down and emit low-frequency delta waves, which currently constitute approximately 20-50 percent of brain waves.)
  • It isn’t easy to wake up someone at this point since the blood circulation to brain reduces and increases towards muscles to revive the physiological energy which was depleted throughout the daytime.
  • Immune system operation is improved in delta sleep.

approximately 20 minutes (approx.)Slow wave sleep — NREM Stage 4: Deep Sleep Here

  • the next phase of delta sleep and also the deepest one also. The action of delta and theta brain waves (constituting greater than 50 percent of brain waves) is the highest inside this phase.
    • Through this condition, the individual enters a condition of complete unconsciousness.
    • This second phase of delta sleep is that the length prior to the REM sleep period starts. But prior to the REM cycle begins, the initial four NREM sleep cycles recur once more.
  • REM sleep — Stage 5: Fantasy Sleep

    • REM sleep cycle is eliminated nearly after 70-90 minutes of the comprehensive sleep cycle.
    • This phase of the sleep cycle is controlled by a higher frequency beta wave, that keeps the mind active during sleep.)
    • Unusual muscular twitches, rapid breathing, irregular heartbeats, rise and drop in blood pressure, penile tissues (in males) and clitoral enlargement (in girls) are clear signals of the sleep cycle.
    • With large hormonal imbalances and energetic brain waves, the individual experiences most vibrant and realistic fantasies in this phase. The psychology of fantasies of the individual is based upon the actions he’s performed in the whole moment.

    ( Read more about The Wonders of Natural Sleep Aids )

    • There could be 3-5 REM episodes for an individual in his sleeping cycle. It’s a pure form of meditation using complete concentration. Deprivation of a normal sleep pattern may result in impaired thought processes, diminished immune system, chronic depression, and sleep disorders like insomnia. The importance of REM sleep cycle is it keeps the mind active and enriches the overall cognitive thought processes of the individual by opting to recall what’s necessary and discard what isn’t required.


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