Sleep plays huge role in everyone’s daily routine. It is one of the most important requirements with nutrition and exercise to have a healthy, happy life. Mastin (2013) defined that sleeping is a body and mind condition which occurs naturally and recurs periodically every day. While sleeping, mental and muscular activities are minimized. That is the reason why people are less capable to accept stimulus coming from outside. However it has to be considered apart from hibernation, coma or anesthesia states since it is simply and instantaneously reversible (“Definition”). For years it was believed that, sleep was a passive state in which humans minds were shut down. Philosophers called it rehearsal of the death. Fortunately few decades ago it was
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While sleeping body temperature decreases about 1°C. So it becomes easier to maintain that temperature. Other prove for this opinion was that smaller animals which have higher metabolic rates than bigger ones sleep longer (Energy Conservation). However with the help of modern technology, today it has been proved that only during non-REM sleep brain consumes less energy. During REM sleep organisms use energy almost as much as waking hours. One of the opinions supports that sleeping is necessary for early brain development. It can be accepted by looking sleeping hours of people in different ages. Infants can sleep almost whole day. The need for sleep decreases with the age. Another idea is about memory processing, learning and physical restoration. While sleeping long term memories being organized and new informations that have been learned while awake started to be categorized. It has been observed that people who has sleep deprivation have problems to focus on something specific and memorize …show more content…
By taking data from these machines sleeping is separated into two main broad types which are REM (rapid eye movement) sleep and NREM or non-REM (non-rapid eye movement) sleep. Each has their own physiological, neurological and psychological features. NREM sleep divides into 4 stages too which are called stage 1, 2, 3 and 4. According to American Sleep Association (2016) it is a cycle starts from stage 1, ends with REM sleep and repeats itself consistently. Stage 2 has the longest part in the cycle, 50 percent of sleep is spent in this stage. Second longest one is REM sleep with 20 percent and others have 30 percent. Length of these stages changes according to human’s age. For example infants spend around half of their sleep in REM sleep (“What İs Sleep?”). During stage 1 people can easily be awakened. In this stage heart rate starts to slow down and breathing becomes steady, muscles are not inactive and eyes can twitch. Beta and gamma brain waves are observed. When stage 2 begins muscle activity decrease more, awareness of outside begin to stop almost totally. Brain waves in this stage are mainly theta waves. There might be a little fluctuations in the brain waves frequency called brain spindle which does not happen in stage 1. In
While sleeping body temperature decreases about 1°C. So it becomes easier to maintain that temperature. Other prove for this opinion was that smaller animals which have higher metabolic rates than bigger ones sleep longer (Energy Conservation). However with the help of modern technology, today it has been proved that only during non-REM sleep brain consumes less energy. During REM sleep organisms use energy almost as much as waking hours. One of the opinions supports that sleeping is necessary for early brain development. It can be accepted by looking sleeping hours of people in different ages. Infants can sleep almost whole day. The need for sleep decreases with the age. Another idea is about memory processing, learning and physical restoration. While sleeping long term memories being organized and new informations that have been learned while awake started to be categorized. It has been observed that people who has sleep deprivation have problems to focus on something specific and memorize …show more content…
By taking data from these machines sleeping is separated into two main broad types which are REM (rapid eye movement) sleep and NREM or non-REM (non-rapid eye movement) sleep. Each has their own physiological, neurological and psychological features. NREM sleep divides into 4 stages too which are called stage 1, 2, 3 and 4. According to American Sleep Association (2016) it is a cycle starts from stage 1, ends with REM sleep and repeats itself consistently. Stage 2 has the longest part in the cycle, 50 percent of sleep is spent in this stage. Second longest one is REM sleep with 20 percent and others have 30 percent. Length of these stages changes according to human’s age. For example infants spend around half of their sleep in REM sleep (“What İs Sleep?”). During stage 1 people can easily be awakened. In this stage heart rate starts to slow down and breathing becomes steady, muscles are not inactive and eyes can twitch. Beta and gamma brain waves are observed. When stage 2 begins muscle activity decrease more, awareness of outside begin to stop almost totally. Brain waves in this stage are mainly theta waves. There might be a little fluctuations in the brain waves frequency called brain spindle which does not happen in stage 1. In