There are140-1600 million human brain cells, and only110 is developed and utilized. A person's brain can store 50 times as much information as the Library of Congress, that is, 500 million books. In the Guinness Book of World Records, an Englishman remembers the most cards. He can remember 54 decks of playing cards at a glance (* * * 2808 cards! )。 In the 1920s, Alexander Aitken could remember the digits after the decimal point of pi 1 0,000, but this record was broken by an Indian memory master in 198 1, and he could remember the digits after the decimal point of 3 1. This record was later broken by a Japanese memory master, who can remember 42905 digits after the decimal point! You may not be able to imitate such amazing skills, but you can improve and enhance your intelligence and memory like these memory masters. No matter how smart you are, no matter how highly educated you are. There are many skills and techniques that can help you make full use of your brain cells, which are the highest part of the central nervous system and the main part of the brain. Divided into left and right cerebral hemispheres, the corpus callosum composed of nerve fibers is connected. The gray matter covering the surface of the cerebral hemisphere is called the cerebral cortex. It contains many pyramidal nerve cells and other types of nerve cells and nerve fibers. The deep cortex is medulla, which contains nerve fiber bundles and nuclei. In the medulla, the ventricle in the brain is the lateral ventricle, which contains transparent cerebrospinal fluid. The gray matter nuclei buried in medulla are basal ganglia. There are many cracks of different shades on the surface of the cerebral hemisphere (the raised part is the gyrus). Mainly central sulcus, lateral fissure and occipital fissure. The human brain hemisphere is highly developed. The surface area of adult cerebral cortex is about 1/4 square meters, which contains about140 billion neurons. They have extensive and complicated connections and are the center of higher nervous activity. The cerebral cortex is connected with the lower center through the medullary internal capsule. The outside of the brain is covered with connective tissue, and cerebrospinal fluid is filled in the cavities, chambers and tubes of the brain, which has protective and nutritional effects. The blood supply to the brain comes from vertebral artery and internal carotid artery. There are more than10 billion nerve cells in the human brain, which can record about 86 million pieces of information in life every day. It is estimated that a person can store 100 trillion pieces of information by memory in his life. If you can convert brain activity into electrical energy, it is equivalent to the power of a 20-watt light bulb. According to some measurements by neuroscientists, the circuit of nerve cells in the human brain is more complicated 1400 times than the telephone network all over the world today. Every second, there are 654.38+ million different chemical reactions in the human brain. Only 1% of the information continuously received by the five sensory organs of the human body is processed by the brain, and the remaining 99% is filtered out. The fastest transmission speed of nerve impulses between brain nerve cells is more than 400 kilometers per hour. There are140-1600 million brain cells, and only110 is developed and utilized. A person's brain can store 50 times as much information as the Library of Congress, that is, 500 million books. The brain is surrounded by a membrane containing veins and arteries, which is filled with sensory nerves. But the brain itself has no feeling, even if the brain is divided into two, people will not feel pain. The average human brain accounts for 2% of the total body weight, but it needs to use 25% of the oxygen used by the whole body, while the kidney needs 12% and the heart needs 7%. The transmission speed of nerve signals in nerve or muscle fibers can be as high as 200 miles per hour. There are 45 miles of nerves in the human body. The number of human brain cells is more than twice the total population of the world, and it can process 86 million pieces of information every day, and its memory stores more information than any electronic computer.