I am speaking about the Subconscious Mind.
This is a level far beyond the brain and neurons.
Neither the “ego” nor "consciousness are “in the brain”.
The brain and the neurons are just a translation device from consciousness to the physical.
Trauma, beliefs about self love and limiting beliefs are not “stored in the brain”.
They have neurological physical representations, but they are not actually “there”.
I highly recommend you study the insights from the consciousness and brain connection from Near Death Experiences and Astral Projection.