The human brain has been reduced to 14 billion neurons

How many (neurons) are in the human brain? One hundred billion. It was a virtual number, but no one knew where this number came from.

>>>The human brain has grown to its limit

According to Suzana Herculano-Houzel from Riode Federal University of Brazil, Brazil, her group decided to count the neurons of the human brain when no one had given the correct answer.

If you count the nerve cells in the human brain with your eyes and hands, the number of these cells may be less than the stars in the night sky, or the whiskers in your chin or beads in the poppy flower bag.

However, there is a scientific method that can solve this problem. It is using a small part of the brain and counting the number of neurons in it. Then, multiply that proportion of the brain as compared to the whole brain. Therefore, the number of neurons may be more or less normal. But Ms. Suzana's research team chose another way.

They used the whole brain and carefully opened the cell membrane and took a spoonful of peeled brain, which contains swimming cells. The cell nucleus density in each part of the brain soup spoon just above is quite similar. Then, they count the number of neurons. However, Schwann cell particles (the outer cell of nerve cells), cells that do not signal, cannot be counted.

To accomplish this, the researchers had to use four brains of four men aged 50, 51, 54 and 71 to volunteer for brain donation.

None of them had a history of nerves. According to research results, at present, our average brain has about 86 billion neurons, down 14 billion neurons compared to the previous figure of "one hundred billion" .

According to some researchers, the size of the brain corresponds to the size of the body. If the body is large, the brain also develops in accordance with the body to be able to control its body easily. On the other hand, if someone has a more developed brain than the body, that person has a high neurological function and develops social life.

Currently, a big problem still challenges researchers, who are the authors of the answer "one hundred billion".