]The Secret of Baby's Brain Development[/b]
From birth to the age of 3, the rapid development of various abilities in infants is closely related to the rapid development of the brain. The weight of the human and chimpanzee brain is similar at birth, but a key difference is that most of the development of the chimpanzee brain occurs in the womb, while most of the human brain development occurs after birth.
At birth, the weight of the human brain is about 370 grams, doubling by six months, and reaching three times its birth weight by the age of two. The brain has approximately 100 billion nerve cells (neurons), which are mostly in place at birth, though they resemble seedlings. From birth to the age of two, these "young trees" of neurons develop rapidly, becoming lush and fully branched "big trees". Connections between neurons are made through synapses, of which there are relatively few at birth. By six months, the number of synapses increases more than sevenfold, peaking at the age of two. On average, each neuron has 15,000 synapses, one and a half times that of an adult, maintaining this level until the ages of 10 to 11. Afterward, according to the principle of "use it or lose it," these connections are gradually pruned.
There are very few connections between neurons at birth. After birth, synaptic formation establishes trillions of network connections, enabling orderly functional activities within the brain, which serves as the foundation for intellectual development.