The mother-in-law sent a dream recently induced a question, what are the content of the dream, what are the symbols of the things that appear, and what guidance does it convey? People have been very interested in it for a long time. To understand th...
The mother-in-law sent a dream recently induced a question, what are the content of the dream, what are the symbols of the things that appear, and what guidance does it convey? People have been very interested in it for a long time. To understand the scientific viewpoint, during sleep, the brain extracts daytime memories from the visual cortex area, reforms and cures, and becomes long-term memories, because images appear only when the visual cortex area is involved. If you want to use one sentence to understand the origin of the content of the dream, it is "thinking on the day and dreaming on the night."
Zhang Fangjia, a professor at the Institute of Brain and Mental Science at Taiwan University, said that people's sleep can be divided into several stages. First, they will first enter the "non-rapid eye movement period". From pure sleep to deep sleep, they can be divided into three stages: N1, N2, and N3; then they will return from N3 to N2, but N2 will not return to N1, which is a very clean sleep stage, but will enter the "rapid eye movement period" between the two.
In the "rapid eye movement period", the brain extracts daytime memories from the visual cortex area, reorganizes and solidifies them, so that they can become long-term memories. Since the visual cortex area is involved, images will appear, but because the prefixes in charge of logic are not working at this time, the dream situation is sometimes inconsistent. If you wake up at this stage, you may be clear about what happened in your dream. If you want to use one sentence to understand the origin of the content of the dream, it is "thinking on the day and dreaming on the night."
Zhang Fangjia said that the sleep stage goes from N1 to N3, and then returns from N3 to N2 and rapid eye movement. This is called a sleep cycle, and the time takes about 90 minutes. Generally speaking, sleep takes 4 to 6 cycles, with a total of 6 to 9 clocks; only the first two cycles can enter the deep sleep stage of N3.
After having a basic understanding of sleep, you will know that sleep cannot be cut into several good sections. Otherwise, every time you start sleeping from the head, the sleep cycle must also come from the head. You may not be able to undergo sufficient "rapid eye movement", so you cannot trim unnecessary memories or cure and store necessary memories, which will have negative effects in the long run.
