Brain cell development starts at 42 days after conception. The first brain cell called a neuron fires. Approximately 9,500 new neurons are created every second till there are 100 billion neurons. We are born with 100 billion neurons and have that many till late middle life.  

Sixty days before your birth your neurons start trying to communicate with each other. That communication is a reaching out as a strand called an axon. When a connection is made, a synapse is formed. By the age of three each of the 100 billion neurons have formed 15,000 synaptic connections. That’s 15,000 for each of your 100 billion neurons. For example, from 16 months to 36 months there is a big burst of language and cognitive competence. The child goes from knowing a total of 5-10 words to gaining 1-2 words every day. 

The stronger the neuron connection, the faster the processing. We learn because our neurons are connected. Each time we learn something new, our brains are changed. The patterns of woven connections is extensive, intricate and unique.