The damage he sustained to his frontal left lobe was catastrophic.
It changed his personality to that of a psychopath. But he did heal from this eventually. Proving that moral injury to the brain is much more permanent than physical injury.
This is the brain scan of a psychopath. Someone that has destroyed their conscience, resulting in physical brain damage.
https://i.pinimg.com/originals/48/a1/f8/48a1f87d968976061547d2dfbd0332fe.jpg![]()
Gage in 1848 led us to ask if different parts of the brain had different functions. Something that has now been proven.
For a few years he displayed the childish, violent, easily bored, selfish shameless and inconsiderate attitues that psychopaths all learn to hide and excuse away.
The part of his brain that considered how his behaviour affected those around him had been disabled by physical trauma rather than the more common cause of initiations into the occult.
big_fat_dangus 0 points 3.4 years ago
The article provides the answer to the question you asked at the end of your post. Which is something very basic that anyone who's taken any evolutionary biology knows, btw.