Phineas P. Gage is a remarkable example of violently being lobotomized and surviving.
link-1link-2link-3link-4The frontal lobes seem to be the seat of conscience in the human brain.
{TSDF 59.8} talks about brain irritation affecting morals ( the ability to use higher brain functions + value system) to do and desire the right thing.
If the frontal lobe is physically damaged by trauma or chemically deadened to the point of non use - the person loses the ability to discern right and wrong. {CG 402.3 - 404.3} describes some of this process.
It's like the child that I met at handicapped camp many years ago. He had fallen off a bicycle, hit his head on a curb and destroyed the brain center for hearing. He was as deaf as a stone, but his ears were fine.
Alcohol puts the frontal lobe to sleep chemically and messes up many more brain functions, thus the sons of Aaron offered strange fire and God executed them publically.
A man may argue ......"what does that hole have to do with the house ?"............the builder may explain it is the entry and exit point......it's called the door. There is an anatomic area of the forebrain called the christagali..(sp?).. because on x-ray it looks like Christ kneeling in prayer. [I just can't get close enough to the proper spelling to pull it up on the web]
brain-1brain-2brain-3brain-4