Every time you learn something, you are reshaping your living brain, a process known as brain osmosis. synaptic malleability. self-directed neuroplasticity. self-directed neural induction.

Self directed neuroplasticity.

Explanation:

Neuroplasticity is the adjustment in synapses and neural pathways that occurs as a result of certain factors, such as environment, behavior or neural processes. The brain strengthens the useful neural connections and deletes those that are not useful anymore.

Self-directed neuroplasticity was developed by Dr. Jeffrey Schwartz in his book which was titled “The Mind and The Brain". Schwartz stated that individuals have a vital role to play in how their brain works by deciding on where to focus one's attention and that a person's IQ genetically-predetermined. 

the density would be a smaller number.