Dream and sleep quality
With the development of modern psychology, the study of dreams is more and more in-depth. The mystery of dreams has been gradually lifted for thousands of years. One of the recent research conclusions is that "dream sleep helps brain health".
Dream is a normal and necessary physiological and psychological phenomenon of human body. After people fall asleep, a small number of brain cells are still active, which is the basis of dreams. According to research, people's sleep is carried out alternately by normal phase sleep and out phase sleep. 80% of the people awakened in out phase sleep are dreaming, and 7% of the people awakened in normal phase sleep are dreaming. A person's dreams can last about 1.5 hours every night. Because dreams accompany the cycle of sleep, people who wake up in heterogeneous sleep feel more dreams, while people who wake up in normal sleep feel less dreams. In addition, most of the dreams that people can remember are about to wake up, while the dreams that just fall asleep have already disappeared, which is another reason why people feel that they have more or less dreams.
Why do people dream? What will happen if they don't dream? Scientists have done some experiments to block people's dreams. That is, as soon as the dreamer's brain wave appears, he will be awakened immediately and will not let his dream continue. It is found that the deprivation of dream will lead to a series of physiological abnormalities, such as the increase of blood pressure, pulse temperature and skin electric response ability, the weakening of autonomic nervous system function, and a series of adverse psychological reactions Should, such as anxiety, irritability, perceptual hallucinations, memory disorders, disorientation and so on. Obviously, normal dream activity is one of the important factors to ensure the normal vitality of the body. Because the right hemisphere is dominant in the dream, and the left hemisphere is dominant after awakening, in the process of 24-hour day and night activity of the body, waking and dream appear alternately, which can achieve the dynamic balance of neural regulation and mental activity. Therefore, dream is a way to coordinate the balance of human psychological world, especially for people's attention, emotion and cognitive activities.
Psychologists believe that human intelligence has great potential. Generally, it takes less than 1 / 4, and the other 3 / 4 are hidden in the unconscious. Dreaming is a typical unconscious activity. Through dreaming, we can recombine the existing knowledge, reasonably integrate the new knowledge with the old knowledge, and finally store it in the warehouse of billions, making knowledge our own wisdom and talent. Dreams can help you think creatively. Many famous scientists and writers have made great achievements, and many of them have benefited from the Enlightenment of dreams.
According to a survey on the outstanding scholars of Cambridge University, 70% of them believe that their achievements have been inspired by dreams. The University of Geneva in Switzerland conducted a similar survey of 60 mathematicians. 51 of them admitted that many difficult problems had been solved in their dreams. If people can't dream, it may lead to the disorder of mind and personality to some extent, and even affect the exertion of thinking inspiration.
Dreamless sleep is not only of poor quality, but also a sign of brain damage or disease. Clinicians found that some patients with headache and dizziness often complained that they no longer had dreams or rarely had dreams during sleep. After diagnosis and examination, it was confirmed that these patients had slight hemorrhage or tumor in the brain. Medical observation shows that children with dementia have less dream sleep than normal children of the same age, and the elderly with chronic brain syndrome have less dream sleep than normal elderly of the same age.
Recent research results have also confirmed this view, that is, dreams are the result of the balance of various functions of the body by the brain regulatory center, and dreams are the needs of the healthy development of the brain and the maintenance of normal thinking. If the brain regulatory center is damaged, there will be no dreams, or only some incomplete dream fragments. If there is no dream sleep for a long time, people should be vigilant. Of course, if the long-term nightmare, it is often a sign of physical weakness or suffering from certain diseases.