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What is the state of deep sleep? Summary of deep sleep performance characteristics

What is the state of deep sleep? Summary of deep sleep performance characteristics

4hw.com.cn: now, with fast pace of life and high pressure, sleep quality has become the most concerned topic of many people. Sleep quality is not equal to sleep time. If there is deep sleep in a period of sleep, it will effectively alleviate fatigue. What are the manifestations of deep sleep? Let's get to know.

What is the state of deep sleep

We have to sleep every day. Many people are sleepy. Sleep occupies a lot of our time. Is it necessary? During sleep, about a quarter of the time belongs to deep sleep, and our deep sleep state is very close to the death state. What is the relationship? An accurate psychological explanation today.

In wartime, when the army captured the enemy, it liked to use this feature to torture the prisoners. They used strong lights to illuminate the eyes of the prisoners so that they could not go to sleep. In fact, this method is very effective, and mentally disordered prisoners will basically disclose information.

Psychologists point out that sleep is actually divided into three stages: light sleep, excessive sleep and deep sleep. When we enter deep sleep, the body begins to enter deep rest, and the body and spirit are highly relaxed. In this state, people will lose their sense of autonomy, and only the basic functions of the body are running.

At this time, your body is no different from the state of death except that you are still breathing. This is why it is difficult to wake up many people when they are sleeping, because most of the functions of the body have stopped working.

Psychologists have found many meaningful things about the deep-seated causes of human sleep after a long time of research. According to the three stages of sleep mentioned above, American psychologists have tried to carry out sleep deprivation experiments, that is, to interfere with the subjects' sleep in varying degrees, namely, excessive sleep deprivation and complete sleep deprivation.

The results are very interesting. The former basically has no obvious effect, while the latter has the symptoms of trance, emotional anxiety, and even life-threatening. In order to challenge the record of not sleeping for the longest time, someone insisted for six days, suddenly began to have a mental breakdown, and finally was sent to the hospital for rescue.

Neuropsychologists believe that sleep is actually periodic. Usually, we only have shallow sleep for more than ten minutes before we fall asleep. In the next 2-3 hours, we begin to enter the transition stage. Finally, we continue to have deep sleep for about 2 hours and cycle in turn. Among them, the most effective stage for the recovery of side functions is the deep sleep stage.

In this state, our body and spirit can be relaxed to the greatest extent. In order to verify this conclusion, neuropsychologists have also conducted experiments on radio wave interference, that is, before people are about to enter the deep sleep stage, they send radio waves to the brain to force them to wake up from this state. It was found that the subjects became very anxious and mentally tired. Through this experiment, we have once again proved the importance of deep sleep to us.

This can explain why some people can only sleep for 3-4 hours a day because they are very easy to enter deep sleep. In human history, some geniuses have learned to use this method to reduce sleep time. Da Vinci is one of them. The Da Vinci sleep developed by Da Vinci only needs to rest for about 4 hours a day, which not only brings him a lot of valuable time, but also makes a great contribution to mankind.

Psychologists believe that everyone can quickly enter the deep sleep stage. For example, before going to bed, you can breathe slowly for about 8 seconds, then hold your breath for 5 seconds, and finally breathe out slowly. Don't be too urgent. After several repetitions, your spirit begins to relax completely, so that you can quickly enter a deep sleep state.

In addition, before going to bed, listen to light music and imagine yourself facing the sea with a warm sea breeze. You are as soft as a sponge. When you enter this state, it is very easy to fall asleep, because your attention is very focused and will not be troubled by daily trivial things.

Performance of deep sleep

Sleep depth is generally measured by reduced physical activity and reduced sensory sensitivity. In addition, some physiological indexes, especially arousal threshold, also indicate that the third and fourth stages of slow wave phase are deep sleep. As for the depth of heterogeneous sleep, it is difficult to determine, because it not only shows muscle tension relaxation, but also often shows whole-body turnover and facial and finger muscle twitch;

In terms of feeling, it is difficult to wake up the sleeper with irrelevant stimuli, but it is very easy to wake up when the stimuli have special meaning or are related to the content of his dream. These contradictions suggest that an active process in the brain during heterogeneous sleep can cut off its connection with unrelated stimuli. If it is judged by the activity of the autonomic nervous system, heterogeneous sleep is closer to the waking state. If a person wakes up at this time, he will say that he is sleeping soundly; On the contrary, if you wake him up in the slow wave phase, you say you can't sleep well. It is speculated that this subjective sleep consciousness may be related to his dreams.

To sum up, it is difficult to accurately measure the depth of sleep. The trend is to treat the heterogeneous and slow wave phases as two independent states.

If you are satisfied with your sleep, feel good about yourself, have a clear mind, relieve fatigue, be energetic and improve efficiency after waking up, you will achieve the effect of deep sleep. Therefore, the sleep time of 7-8 hours is only an average, and the sleep time varies from person to person. If you only sleep for 5 or 6 hours and the above standards are met, it means high-quality sleep, because your deep sleep time is enough to ensure the sleep quality. On the contrary, even if you sleep for 9, 10 hours or more, you can't meet the above standards, which also indicates that the sleep quality is not good. The view that less sleep is insomnia, so worry and panic is obviously falling into the misunderstanding of sleep.