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One of the top ten unsolved mysteries of the brain has come back to life.
1. Dream
If you ask 10 people the same question-what causes dreaming, you may get 10 different answers. This is because scientists have not solved the mystery yet. One possibility is to exercise the brain through the information neural bonds between brain molecules during dreaming.
In the process of dreaming, the brain is exercised through the information neural bonds between brain molecules.
There is also a theory that people dream of tasks and emotions that can't be taken care of during the day, and this process can help people consolidate their thoughts and memories. Generally speaking, scientists agree that dreams occur during shallow sleep, which they call rapid eye movement sleep.
sleep
The fruit fly wants to sleep, and so does the tiger. Humans never seem to get enough sleep. What we are discussing here is the topic of sleep. People spend a quarter of their lives sleeping. However, the root cause of sleep is still as puzzling as a dream.
Humans never seem to get enough sleep.
But scientists do know an important aspect of sleep: sleep is essential for the survival of mammals. Long-term insomnia can lead to trance, hallucination and eventually death. Two States of sleep-deep sleep (slow eye movement), when brain metabolic activity slows down; Light sleep (when dreaming), during which your brain is active.
Some scientists believe that deep sleep can make the body rest and save energy, just like animals hibernate. Light sleep helps to organize what you remember. However, this view has not been confirmed, and dreaming during light sleep is not always related to memory.
Hallucinate
It is estimated that 80% amputees have experienced the feeling of warmth, longing, pressure and pain from amputees. People who have experienced this phenomenon (commonly known as "phantom limb") always feel that the amputated limb still exists.
One explanation is that the nerve area of the severed limb reconnects with the spinal cord, and it continues to send signals to the brain as if the severed limb still exists. Another possibility is that the brain is a "hard-wired" transmission, which manipulates the residual body like a perfect body-which means that the brain still retains the blueprint for manipulation under the condition of sound limbs.
Humans often have hallucinations.
4. Task control
The suprachiasmatic nucleus or biological clock in the hypothalamus of the brain makes the body run at a 24-hour rhythm.
The suprachiasmatic nucleus in the hypothalamus of the brain keeps the body running at a 24-hour rhythm.
One of the most obvious results caused by circadian rhythm is the sleep-wake cycle, but the biological clock can also affect digestion, body temperature, blood pressure and hormone production.
The researchers found that the biological clock can be adjusted forward or backward by enhancing light and regulating melatonin. Recently, people have been debating whether melatonin supplementation can help people prevent jet lag-drowsiness and headache when the plane passes through the time zone.
5. Memory pathway
Some experiences in life are unforgettable, just like your first kiss. But how can one grasp these private scenes? Scientists are using brain imaging technology to try to find out the mechanical reflection of creating and storing memories. They found that the hippocampus inside the gray matter of the brain can act as a memory storage box.
But the resolution of this storage area is not strong. * * * of the same brain region can make it produce real and false memories.
In order to distinguish between real memory and false memory, the researchers put forward a method of strengthening memory according to background memory. If something has never really happened, it is difficult to strengthen the memory of the human brain in this way.
Memory is stored by nerve cells in the cerebral cortex.
Pleasing the brain
Laughter is one of the most difficult behaviors for human beings to understand. Scientists have found that when people laugh, three parts of the brain become active.
When people laugh, three parts of the brain become active.
They are: the area that dominates thinking and tells you jokes; The exercise area makes your muscles move; The emotional area leads to "frivolous" emotions, which makes people smile. But why do some people laugh at my brother's stupid jokes, and some people giggle at horror movies?
John Moreel, a pioneer in humor research at William and Mary College, found that laughter is a reflection of very interesting unconventional and incongruous stories. Another view in the field of humor holds that laughter is a way to send a signal that this behavior is "interesting" to others. It can be seen that laughter makes us feel better.
7. Birth and nutrition
Whether our thoughts and personalities are controlled by genes or by the environment has been debated endlessly. Scientists have established a convincing evidence system to prove that it may be controlled by one or two of them.
The ability to study a single gene shows that we can't control many characteristics of human beings. However, in many fields, peer pressure or education will have a profound impact on who we are and what we will do.
The ability of individual genes shows that we can't control many characteristics of human beings.
8. The mystery of death
Long life is something that only happens in Hollywood movies. But why do we get old? When you were born, you were like a dynamic toolbox, full of various mechanisms to fight diseases and repair wounds. Maybe you think these alone can make you resist diseases such as joint stiffness.
With the growth of age, the body's repair mechanism gradually lost its previous efficacy.
However, with the growth of age, the body's repair mechanism gradually lost its previous efficacy.
In fact, as you get older, your body's ability to recover from trauma and stress is declining. The theory holds that human aging can be divided into two categories:
Aging, like other characteristics of human beings, may be a part of human genetic genes, which is beneficial to human beings in some ways.
2) From the most pessimistic point of view, aging is not intentional, and cells are constantly damaged in people's lives, leading to human aging.
A large number of researchers believe that science will eventually slow down the pace of aging and make human life expectancy at least twice.
9. Low temperature storage
It may be unrealistic to ask for a long life. But a new field called cryonics will bring some people back to life.
Cryopreservation centers, such as AlrLifeExtensionFoundation in Arizona, store the dead bodies in frozen containers filled with liquid nitrogen at a temperature of minus 320 degrees Fahrenheit (78 degrees absolute).
The purpose of this idea is that after finding a cure in the future, people who died of incurable diseases can be brought back to life through thawing.
Frozen preservation in film and television dramas
Recently, baseball legend ted williams was kept in a freezer in Alkud. Like other human popsicles, Williams was placed head down. The advantage of this placement is that if the container leaks, the brain can still be stored in cold liquid. So far, the bodies that have not been preserved have been reborn, because the technology of rebirth does not exist yet. For example, if a corpse is not thawed at a proper temperature, human cells will freeze, leading to injury and fragmentation.
consciousness
The brain is a small factory.
When you wake up in the morning, you may have realized that the sun has just risen, and you will feel a sense of happiness when you hear some birds chirping happily in the branches, or even when you hear the fresh air brushing your cheeks. In other words, you are conscious. This complex topic has puzzled the scientific community from the beginning. Recently, neuroscientists have regarded consciousness as a realistic research topic.
The brain is a small factory, which is described by an old saying of China: "The sparrow is small and complete." In this factory, nerve cells work in coordination with each other to make the human mechanism work normally. But we still know a lot about the brain, and we need to continue to study and explore.
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