There are many factors that affect the development of the brain, including genetic factors, nutritional status, family environment, daily experience, and physical activity. In the past, some scientists thought that the development of the brain was genetically determined, and what kind of brain was developed by what kind of gene it possessed. The process of development followed an established procedure.
The external environment stimulates our brains through the senses - vision, hearing, smell, touch, taste. The first time a baby smelled the smell of his mother's skin, the sound of his father's hearing, the color of a brightly colored toy in the room, or the soft touch of a warm hand, Will be introduced into the brain together to shape the formation of the brain circuit.
Think of your child's brain as a house. In the first three years of life, the brain, which already has 80% of the brain volume of an adult, has completed 80% of its house-building projects - huge foundations, extra blocks and roof beams. The next step is interior decoration. Buy wires, install switches, connect the circuit in each room, to ensure the normal operation of the house. But the brain's circuit is much more complex. We are as if we are in the giant galaxy that nerve cells form, but the connection between these cells is not yet established. What the brain needs to do at this time is to correctly set up the connections for each loop so that they run at maximum efficiency and continually refine them.
Humans have more than one hundred billion nerve cells in their brains. This figure may be hard to imagine, which is 10 times the number of stars in the entire Milky Way or 20 times the population of all on Earth. Nerve cells divide many twigs (dendrites), connect with other nerve cells and transmit chemical signals. These chemical signals determine whether the cell is active or silent.
