What is the mechanism of sleep and its significance?

1. The meaning of sleep.

Sleep is defined as a particular state of perception that occurs periodically, consisting of different phases and relatively unresponsive to the surrounding environment. Through sleep, people's energy and physical strength are restored, and they can maintain a good state of awakening after sleep.

Sleep is the most natural way to rest. Through sleep, the body is replenished and repaired during the day for damage, consumption, overwork, etc., so that it can return to a natural and balanced state. Sleep is very important for maintaining human health and promoting the early recovery of patients.

2.Principles and stages of sleep.

1) Sleep principle: Sleep is controlled by the sleep center. The sleep center is located at the tail end of the brainstem, and the conduction impulse is used in the cerebral cortex.

It is constrained by the role of the brainstem reticular ascending system, which controls wakefulness, thereby regulating the mutual transformation of sleep and wakefulness.

2) Stages of sleep and changes in each stage:

1) Stages of sleep: Slow-wave sleep: divided into 4 periods: i, iv, and iv; Fast-wave sleep.

Or asympnosis.

Also known as rapid eye movements, REM sleep.

2) The performance of each period: The ith phase: that is, the transition period, which is the period when people sleep the most and is easy to be woken up.

Muscles throughout the body relax, breathing is even, and the pulse slows down. Phase 1: Sleep gradually deepens, but is easily awakened.

The muscles of the whole body are relaxed, the breathing is even, the pulse is slowed, and the body temperature and blood pressure are dropped. Phase: That is, the period of deep sleep, difficult to wake up.

The muscles are completely relaxed, the breathing is even, the heartbeat is slow, and the body temperature and blood pressure drop. Phase IV: That is, the period of deep sleep, which is extremely difficult to wake up.

The whole body is relaxed, there is no activity, the body temperature and pulse continue to drop, and the breathing is slow and even.

Mechanism of sleep: Sleep is caused by an active process that occurs within the center, and there is a center within the center that produces sleep, and it has been suggested that there is a center at the tail end of the brainstem that causes the synchronization of sleep and brain waves. This upward conduction of the center acts on the cerebral cortex (some call it the ascending inhibitory system) and opposes the action of the ascending agonistic system, thus regulating the interconversion of sleep and wakefulness.

The meaning of sleep: sleep is the manifestation of the normal physiological cycle, the nervous system is excited during the day, to ensure that the work can be increased efficiently, and the brain needs to rest steadily at night, and the internal organs and six organs are also recuperated to a certain extent, so as to ensure that the next day wakes up energetic and devotes themselves to work. Therefore, friends with poor sleep quality will experience memory loss, dizziness, dizziness, poor energy and even poor mood the next day.

Therefore, long-term poor sleep must be corrected. Proper sleep is not the same all year round. The often said early bedtime and early wake up does not apply to the four seasons of the year, if it is in spring and autumn, it is recommended to go to bed early and get up early.

If it is winter, it is recommended to go to bed early and wake up later, that is, go to bed early and get up late, and in summer, you can go to bed late and get up early. In short, the quality of sleep can be guaranteed according to the circadian pattern of the day.

1. Eliminate fatigue and restore physical strength: sleep is the main way to eliminate physical fatigue, and the sleep period is a good time for the gastrointestinal tract and its related organs to synthesize and manufacture human energy substances for activities.

2. Protect the brain and restore energy: Lack of sleep can lead to irritability, excitement or malaise, distraction, memory loss, etc., and long-term lack of sleep will lead to hallucinations. Those who have enough sleep are full of energy, quick thinking, and high efficiency.

3. Enhance immunity, ** body: sleep can enhance the body's ability to produce antibodies, thereby enhancing the body's resistance, and sleep can also speed up the self-improvement of various tissues and organs.

4. Promote growth and development: sleep is closely related to children's growth and development, infants and young children continue to develop in a long time after birth, this process is inseparable from sleep, children's growth in the sleep state is faster, children should be guaranteed enough sleep to ensure their growth and development.

5. Protect people's mental health: Sleep is very important to protect people's mental health and maintain people's normal mental activities.

1. Sleep wellSweet2. Sleep wellStability3. Sleep wellDeep4. Sleep wellDown-to-earth5. Sleep wellPeace of mind

Precautions for sleepSleep is an inhibitory process in the cerebral cortex that plays a protective role on the nervous system. However, some children may not be able to fall asleep every night, or only sleep for a while and then wake up and no longer fall asleep, or even cry, night terrors, sleepwalking, etc., which make parents very distressed. What disturbs a child's sleep?

Generally speaking, there are many factors that cause sleep disorders in infants and young children, such as hunger, pain, discomfort, abdominal pain, irritability or reduced sleep requirements, etc., and parents should take corresponding countermeasures for the causes of poor sleep.

Wearing a watch to sleep will not only shorten the life of the watch, but also be detrimental to your health. Because watches (especially luminous watches) have radium radiation, although the amount is very small, the accumulation over a long period of time can lead to undesirable consequences.

Sleeping with dentures often involves swallowing dentures into your esophagus in your sleep. In addition, the hooks of dentures may puncture the aortic arch next to the esophagus, causing massive bleeding and even life-threatening. Also, sleeping with dentures can also affect the quality of your sleep.

The above content reference: Encyclopedia - Sleep (physiological phenomenon).

Categories: Medical & Health >> Common sense of the human body.

Problem description: Not an expert's free mouth.

Analysis: Sleep refers to the state of inertia and non-response, the level of consciousness decreases or disappears during sleep, and most physiological activities and reactions enter an inert state. Through sleep, the tired nerve cells return to normal physiological functions, and mental and physical strength are restored.

The secretion of growth hormone in the anterior pituitary gland is significantly increased during sleep, which is conducive to promoting the growth of the body and increasing the synthesis of **leuko, which is conducive to the storage of memory.

Sleep is what everyone needs every day, and most people sleep more than 1 or 3 of their lives in their lifetime. However, the exact definition of sleep has different connotations with the changing times. Originally French scholars believed that

Sleep is a state in which sensory and motor activities are temporarily suspended due to the needs of the body, and it is immediately awakened when given the appropriate **. Later, due to the understanding of the electrical activity of the brain, it was believed that sleep is caused by the functional activity of the brain and the physiological activity of animals is low, and the appropriate ** can make it reach a state of complete wakefulness.

In recent years, research has concluded that sleep is an active process, and there is a special center to manage sleep and wakefulness, and the human brain just changes its way of working when sleeping, so that energy is stored, which is conducive to the recovery of mental and physical strength; Proper sleep is the best rest, which is not only the basis for maintaining health and physical strength, but also the guarantee of achieving high productivity.

Sleep: The natural rest by which the organism maintains normal life activities. Some scientists believe that sleep is a positive mental process that organizes the signals or bridges that people receive during the day and eliminates useless information.

Sleep can be divided into two phases: slow-wave sleep and fast-wave sleep.

Characteristics] Brain waves are synchronized during slow-wave sleep, and sensory function and muscle tension are reduced, accompanied by a series of changes in autonomic nervous function.

The brain waves of fast-wave sleep showed desynchronization of fast waves, various sensory functions were further reduced, the arousal threshold was increased, and the reflex movement and muscle tension of skeletal muscles were further weakened, accompanied by intermittent and paroxysmal phenomena.

Physiological significance] Slow-wave sleep is conducive to promoting growth and physical recovery;

Fast-wave sleep is beneficial for the establishment of new synaptic connections, promoting learning, memory, and energy recovery.