What is REM rapid eye movement sleep?

If we want to interpret and analyze dreams, we must understand them well. Dreams are not only a psychological process, but also mixed with physiological factors. Nowadays, many scientific experiments about dreams are going on. Of course, this is mainly the work of some physiologists or physiological psychologists. Now let's meet REM sleep. After 90 minutes of quiet sleep, the brain enters another sleep state-rapid eye movement sleep (REM). At this stage, the sensory function of the human body is further reduced than that of non-REM sleep, and the muscles are more relaxed. At this time, blood pressure is higher than that in non-REM sleep, breathing is slightly faster and irregular, body temperature and heart rate are higher than that in the previous stage, and some muscles of the body can twitch slightly. At this stage, various metabolic functions in the body are obviously increased to ensure the synthesis of protein in brain tissue and the supplement of consumables, so that the nervous system can develop normally and store energy for the next day's activities. The muscle tension of the whole body is extremely reduced, accompanied by local movements of limbs or other parts of the body from time to time, and MUBI occurs during this sleep period. The first REM sleep period is usually less than 10 minutes, and then lasts for 15-30 minutes. Most people go through 3-5 REM sleep stages every night. At this stage, the number of vibrations of brain waves will accelerate to the level of waking. If you have ever observed people or dogs in REM sleep, you will find that their eyes move quickly and repeatedly. Many dogs and some people have arm, leg and facial muscle twitches during REM sleep. In addition to REM sleep, other periods of sleep are called NREM sleep (non-REM sleep). If you want to have a good night's sleep, you must have a rapid eye movement sleep stage and a NREM sleep stage. A normal person spends about 25% of his time in REM sleep, and the rest of his time in n REM sleep. REM sleep is usually a dream, lasting 5-30 minutes. REM sleep occurs when you are dreaming. If you wake a person who is in REM sleep, he can vividly recall his dreams. . This is not the case with NREM. This also explains several problems, such as whether everyone dreams every day, and why sometimes they wake up in the morning and remember dreams, and sometimes they don't. In short, these factors should be taken into account in our dream interpretation and dream analysis.