It is their belief that emphasis on providing early intervention services has resulted in neglect of attention to older children. It seems that all too often facts and fiction merge, and the details of research have been exaggerated and applied in unfortunate ways. In the first three years of life the brain rapidly forms connections between brain cells, and ultimately a single cell can connect with as many as 15,000 other cells . Think of a telephone system with a lot of dialing going on. The circuitry of connections is made up of cells called neurons, which are connected to each other by dendrites.
Dendrites are really 'cell phones' which enable neurons to talk to each other.
However, dendrites don't actually touch each other. Between the dendrites are spaces called synapses. Information is carried from one cell to another across the synapses by means of chemicals called neurotransmitters. Nerve cells in action burn up fuel, just like muscles. If we measure the amount of glucose, which is the brain's fuel, we can measure brain activity.