The infant brain triples its weight in the first 2 years of life as neurons increase in size and efficiency. the speed of processing within the infant brain is largely influenced by the rate at which production occurs, a component that also serves to protect the neuron.

Myelin

Explanation:

Mylenation is the process by which the myelin sheath of the nerve cell is produced.

The main functions of the myelin sheath are protecting the nerves, and faster electrical conduction.

In an unmyelinated nerve cell the electric conduction is slow. But, in a myelinated nerve cell the electric charge jumps from one sheath to another of the same nerve cell which is faster.