Does the human brain shrink? Why do scientists say this?

Sophia, the robot, once had a wish, it wanted to have a mind, it could have emotions, and even wanted to destroy humans. The idea of it, to this day, has caused many people to panic. The existence of artificial intelligence has long been controversial.

There are many people who speculate that the biggest opponent of mankind in the future is likely to be the artificial intelligence created by our own hands, and we should listen to Hawking's advice and stop the development of artificial intelligence as soon as possible. Will humans really be replaced by artificial intelligence in the future?

The emergence of artificial intelligence is inseparable from our unique thinking ability. Researchers turn the ideas in their minds into reality one by one through various experiments. It can be said that artificial intelligence is the manifestation of ideas in the human brain.

In our impression, the brain is the most mysterious organ in our body, and even this evaluation is given to us by the brain. This can't help but make us feel terrified, what is the secret in the brain? Are we controlling the brain, or is the brain controlling us?

Researchers once said in an experiment that the human brain has been shrinking since 10,000 years. The earliest human brain weighed 1,450 grams, but in the process of human development, there was an abnormal situation, and now our brain capacity is only about 1,300 grams, which seems a bit ironic. Is this the result of our adaptation to nature?

Apparently not.

With the rest of our brains, we have created extremely advanced technology that makes the economy better and better. It's just that in various studies, it is shown to varying degrees that the human brain is shrinking. American psychiatric experts say that the emergence of this situation in humans is likely to be related to our development of artificial intelligence.

People come into contact with a large number of mobile phones and electronic devices every day, which slowly changes the way the brain functions. When we spend a lot of time on electronic devices and face-to-face conversations, our brains will subconsciously degenerate our ability to discriminate.

The more complex the social structure, the less flexible the brain becomes, and over time, the functions of the brain that are not used will slowly deteriorate. But that doesn't mean the brain is shrinking. There are many people who believe that the folds of the brain affect our IQ.

If our brain is a computer, what is happening in our brain at the moment is actually an update of the internal system.

In academia, the idea that the brain is shrinking is pure nonsense, and we must not use it as a rumor. As for the claim that artificial intelligence destroys mankind, it is even more unreasonable. As long as we develop artificial intelligence, within our control, there is no need to worry about it posing a threat to humanity at all.

I don't know what you think about this? What do you think the weight loss in the brain suggests?

The human brain doesn't shrink, but the brain cells inside the brain do. Because our brain is used by our body to think things, if we don't use our brain to think regularly, then the matter in our brain will slowly shrink.

will shrink; Scientists say this because the human brain is not fully used, and long-term non-use can lead to brain degeneration, and the most obvious feature of degeneration is brain atrophy.

Possibly. High-tech electronics can make the brain become lazier and lazier, which may lead to brain atrophy in the future.

This conclusion is the result of scientists analyzing data such as 985 fossilized skulls.

As we all knowThe human brain has grown larger over the course of evolutionary history, but sincePleistoceneSince then, the brain has gradually shrunk, a phenomenon that has not been fully explained. So, the timing and reason for the change in brain size remains a mystery.

United StatesDartmouth CollegewithBoston UniversityThe research team studied the historical patterns of human brain evolution and compared them to social insects that form groups and have a similar social structure to humansAntsComparisons were made. The findings were published in the journal Open Access on October 22, 2021Frontier Ecology and EvolutionAbove.

In order to understand the time pattern of human brain evolution, the research team studied fossil humans such as Sahrantelope, Aldipis, and Osstro cortex, humans in the Prepleistocene, Middle Pleistocene, and Late Pleistocene, and analyzed 985 data from the skull of Shapiens, an animal of the same species to which modern humans belong.

The results show that the size of the human brain is in human fossilsHomo erectusAppeared in the covenant2.1 million years agoand PleistoceneAbout 1.49 million years agoEnlarged, but it shrank 3,000 years ago before entering the Holocene.

The reason for the shrinkage of the brain in the Holocene is unclear. But the disadvantage is that the study has proposed a new approach: "It is difficult to elaborate on the history of mankind with fossils alone, but toAntsFor models, factors such as group size, social organization, and collective intelligence can influence human brain evolution.

We will be able to shed light on the impact it will have! ”。

According to the results of the study so far, to:Golden antsRed antsMountain antsBy analyzing the brain size, structure, and energy consumption of ants through a computational model, "the brain may change to a more suitable size depending on collective cognition and division of labor."

This means that in societies where knowledge is shared and each person is engaged in a specific task, the brain may adapt to become more efficient, such as shrinking the size of the brain.

Co-author of the study, Boston UniversityJames TranieroThe professor hypothesized that "the shrinking size of the brain may be due to the increased trust in collective intelligence." In the future, we will use data to test this hypothesis. ”。

Is it true that scientists have warned that the human brain may be getting smaller?

The impact of modern science and technology, such as computer games, on the human brain has become the greatest threat to humanity after climate change.

The evolution of human beings is a long process, and even human beings as expounded in Darwin's theory of evolution have only evolved from single-celled organisms to multicellular organisms. Although today's human beings seem to have developed and evolved to a level of perfection, in fact, the evolution of human beings is endless.

Human beings have created a lot of things with their own wisdom, and the emergence of these things has also promoted the development of human society and provided convenience for human daily life, but do you know? Because of this, scientists have issued research warnings that the human brain may become smaller.

Although from a certain point of view, it is precisely because of the fiery brain of human beings that human society will have a grand development situation. But the pinnacle of this pomp and circumstance is the beginning of the human brain becoming smaller.

The emergence of artificial intelligence has replaced the ability of the human brain to think, although some people are indeed still using their brains, but relatively everyone knows that now human beings only need a mobile phone to go out, so many questions are not willing to think, directly, or with some search engines on mobile phones can get answers.

Scientific instruments are indeed very convenient to use, but if human beings rely on them excessively, their brains will become stagnant. And the mind will become limited, which will make the brain smaller. It will even evolve gradually, leading to the phenomenon of artificial intelligence replacing humans.

In fact, no matter how human beings develop? They can't be separated from the essence, and some machines in the outside world can be used to solve some conveniences in life, but the ability to think is the most fundamental plant that distinguishes human beings from animals, so they can never be separated from it, and become lagging behind. After all, with a good brain, everything is possible, isn't it?

Through millions of years of evolution, human civilization has occupied a huge advantage, and the level of intelligence has become an important indicator of our superiority over other living beings. The brain is the key part that determines the level of intelligence, and scientists have studied it in depth.

As the most important organ of the human body, the complexity of the brain is no less than that of interstellar space, and people's current level of scientific and technological development is limited, so they cannot obtain sufficient information for the time being, so it is still very mysterious to humans at this stage.

Recently, it has been said that with the continuous progress of science and technology, human beings have undergone some changes in their brain habits while enjoying more convenience. If this trend continues, it may lead to the atrophy of our brains in the future, which is not conducive to the progress of human civilization.

This sounds incredible, after all, technology is a product of the development of human civilization, and we have gained a lot of new ideas from it as we continue to explore. It stands to reason that the brain is still in the development stage, so how can it shrink?

In fact, there is no accurate scientific basis for this claim, but it has been questioned by people. After all, scientists have shown that the human brain has more room to develop. It's just that because our body functions can't adapt to it for the time being, we haven't achieved a faster evolutionary rate.

On this basis, scientists believe that the flexibility of the human brain does decline due to various conveniences in the outside world, but this is still a controllable factor. In the future, the use of electronic products will continue to increase, so relevant personnel need to find suitable solutions to solve the problem as much as possible. For example, give the brain more opportunities to use it flexibly, otherwise the principle of use and waste may also appear in humans.

In addition, although there is a certain correlation between the size and flexibility of the brain, the number of brain folds may be the key factor affecting human IQ in related studies.

Scientists believe that human beings use different brain regions to deal with different events, and thinking about problems is conducive to increasing the flexibility of the brain as a whole, so as to better divide labor.

At present, it seems that the use of electronic products has reduced the opportunity for human face-to-face socialization, thus affecting the development of the human language center system to a certain extent, so this problem is still worthy of attention. We need to maximize the positive effects of technology in order to seek more opportunities for development.

The future is quite likely. With the advancement of science and technology, human beings have also seen some changes in their brain habits while enjoying more convenience. If this trend continues, perhaps in the future, our brains will shrink, hindering the progress of human civilization.

I think so. Scientists have shown that the human brain begins to grow and shrinks gradually after the age of 25. After that, our brain cells cannot regenerate.

The human brain is not shrinking. Scientists believe that the human brain is getting bigger and bigger, but the brain is getting more and more pure.

Reduced brain volume in humans does not mean that humans are degrading. Once upon a time there was a science fiction story about a man who went into hibernation for some reason. More than 500 years later, when he woke up, he was surprised to discover the fact that his intelligence far surpassed that of the rest of the people on the planet, due to the degeneration of the brains of the rest of the planet.

In fact, there is some basis for this idea. Relevant data show that more than 3 million years ago, the capacity of the human brain was only more than 400 cubic centimeters, and then gradually increased in the process of evolution. By 20,000 years ago, the human brain capacity reached a peak of 1,500 cubic centimeters.

However, after this, the human brain volume begins to slowly decline. Today, the human brain has a capacity of 1,350 cubic centimeters. That is, the brain volume of modern humans has decreased by 20,000 compared to 10% ago.

The human brain seems to have "shrunk" compared to the past.

There is an argument that the brain, like a muscle, needs regular exercise to get stronger and stronger, and it tends to shrink. Early humans did not have complex sociality. Most of the time, they need to deal with various complex situations in nature relatively independently.

As a result, their brains are often in a state of "movement", so at that time the human brain will be more and more capatic. With the invention of various tools that facilitate human production and life, the "exercise opportunities" of the human brain have been greatly reduced. For example, when we need to calculate some slightly larger data now, we usually use a convenient and quick calculator instead of honestly using our own brains to do the calculations.

It is precisely because of the long-term lack of sufficient "exercise" in the human brain that human beings become "more and more stupid".

Another view is that the human brain makes up only 2% of body weight, but it consumes 20% of total energy. Obviously, a larger brain size means more energy expenditure. As a result, some scientists believe that it is impossible for human brain capacity to increase indefinitely.

When the volume of the human brain increases to a certain extent, it must develop in a more "refined" direction. In the process of evolution, the connections of various neurons in the human brain have become more optimized and efficient, so their size has become smaller, and correspondingly, the energy utilization rate of the brain has also increased. In other words, the modern human brain is the result of "optimization".

Although our brain is smaller than it used to be, it is more efficient.

For example, the computers we useProcessor (CPU).It's not that the larger the CPU, the higher its computing power.