Sleep is one of the most ordinary and at the same time interesting phenomena in the life of every person. The various phases of sleep, their content and interpretation often had a great impact on the life of all mankind.
Here are some interesting facts.
Prophetic dreams.
The ancient Egyptian Thutmose often spoke of a dream in which one of the gods said that he needed to clear the sculpture of the Sphinx from the sand. Thutmose followed the advice of the deity and soon became a pharaoh. Lomonosov saw in a dream the death of his father, which later turned out to be true. In the Old Testament alone, more than 40 dreams are mentioned. Mendeleev, whom he saw in a dream the famous periodic system of chemical elements, is told back in school. These are well-known facts, modern research by scientists suggests that about a quarter of the world's population saw prophetic dreams and experienced the phenomenon of deja vu.
We do not remember our dreams.
Everyone has dreams. Almost 90 percent of dreams are not remembered by people. Most often, after ten minutes after waking up, a person does not remember the dream. At the same time, why exactly this or that dream is engraved in memory is unknown. Some scientific observations show that one of the reasons is the REM sleep phase, but scientists have not yet reached a consensus.
In all dreams there are only people we know.
Despite the fact that in the world there are different stories about how a person first saw a stranger in a dream, and then met him live, the human brain does not know how to invent faces. During the day, any person meets a lot of people in life: on the street, at work, on TVs and on the Internet. After the information is processed and these same people appear in a dream.
For one night, a person sees different dreams.
According to modern research, a person is able to see 4 to 7 dreams in one night. Moreover, not every dream has color, sometimes they are black and white. The process itself is divided into phases of sleep, which are repeated throughout the sleep. This sequence forms a cycle. Its length is approximately one and a half hours.
Man makes discoveries in a dream.
All the stories about discoveries and solutions to problems in a dream are true. Typically, sleep begins with a slow stage of 5-10 minutes. The person’s breathing is even, the pulse is slow. At this time, brain activity is such that various new ideas and discoveries come to mind. The brain still continues to work, solving pressing problems and tasks.
Then comes the second stage. Pulse and breathing slows even more, but at the same time, hearing is more sensitive. At this point, a person is very easy to wake up.
The third stage is determined only by the results of electroencephalography and separates the second and fourth phases of sleep.
The fourth stage characterizes the deepest sleep, during which the most difficult to wake a person. At this stage, the main recovery of the body occurs.
Blind people have dreams.
REM sleep is the last stage. At this moment, the brain works the same as during wakefulness. It is at this moment that a person dreams. It can be seen how the eyeballs make rapid movements, despite closed eyelids.
Sometimes at the time of the fast phase of sleep, a person suffers from sleep paralysis. If you wake up during this paralysis, then at the very beginning there is no sense of ownership of the body. After waking up, all movements are slowed down, there is no way to even move a hand. After a moment, this sensation passes. At the same time, there is no sleeping paralysis with a sharp awakening from an alarm clock or other external irritation.
People who are blinded during life continue to see various pictures in a dream. Those who suffer from blindness from birth, instead of pictures, smell, touch, experience various emotions. They do not have a quick phase of sleep.