... from which cortex?

Jokes aside, if folks are seriously interested in adopting insanity, it is worth stepping beyond the stigma perpetuated by that word, and using one of the condition's accepted names. It should be distinguished from persistent psychosis and non-psychotic hallucinations, the fascinating varieties of which still are sadly lumped together by psychiatrists who, afraid to add failures to their career by studying cases that frequently resist conventional treatments, label some case as "schizophrenia" and seek out more comfortable specialisations.