"Most neurons, brain cells that transmit information, are found in tissue near the surface of the brain. However, in the brains of people with schizophrenia, the team found a high density of neurons in deeper areas, the journal Biological Psychiatry reports"
Schizophrenic brain tries to heal itself | TopNews

this edifies my belief that the "thing"?? causing our "brain hearing" changes the brain physicaly in order to cause the hearing of voices by causing neurons to hit the hearing lobes with ??.