What is the reason why you often dream of dead people when you sleep at night?

Dreaming is a normal and indispensable 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 dreaming. Normal dream activity is one of the important factors to ensure the normal vitality of the body.

The experiment of blocking people's dreams shows that when the sleeper has dreaming brain waves, he is immediately awakened and his dreams are not allowed to continue. The results show that deprivation of dreams will lead to a series of physiological abnormalities, such as blood pressure, pulse, body temperature and skin electrical response ability, and the function of autonomic nervous system will be weakened. At the same time, it will also cause a series of adverse psychological reactions, such as anxiety, tension, irritability and hallucination. Obviously, normal dream activity is one of the important factors to ensure the normal vitality of the body.

Dreams are a way to coordinate the balance of human psychological world.

Because the right hemisphere is dominant when dreaming and the left hemisphere is dominant after awakening, the dynamic balance between nerve regulation and mental activity can be achieved by alternately waking up and dreaming during the 24-hour day and night activities of the body. Therefore, dreams are a way to balance people's psychological world, especially for people's attention, emotions and cognitive activities.