Actually the brain keeps growing into old age. Most people however don’t continue growing, but instead atrophy.
Brain operating frequencies are typically between 0 to 30 Hz for the entire life of most people. The gamma frequency begins at 30 and goes to at least 250 Hz. This is what happens in spiritual awakening and is how the mystics do what they do.
Gamma frequencies of consciousness were not even discovered until 1964 when digital EEGs were developed.
This topic is my area of research and lecture as a result of a major change in my own brain at age 31 from meningitis.
The inflammation damaged my inhibitory GABA neurons causing my brain frequency to rise to the point my perception of reality changed. The stored memories of other people’s life experiences became physical to me as I walk through their soul.
I’ve spent 30 years studying how this happened and discovering the unseen attributes of human consciousness.
The human brain is just a transmitter and receiver for the soul. Everything that Jesus taught us is how to raise our operating frequency of our consciousness.
Did not know that. Interesting.