One disturbing theory that came out of last weekend’s zomBcon was that the undead may be much harder to kill than previously thought.
Several expert panels touched on the fact that crocodiles have extremely small brains, and are almost completely controlled by a tiny almond-shaped section known as the amygdala. What they lack in overall smarts, they make up for in their superior focus and hunting ability.
If zombies likewise rely on their amygdala and brain stem to function, the rest of the large human brain in their skulls would be rendered nonessential. Which means that an ax to the skull of an undead ghoul might not kill it, or even slow it down in the slightest.
In fact, a zombie driven by its amygdala could afford to lose a large percentage of its brain without showing any ill effects. The entire head would need to be destroyed to neutralize the threat.
Just when you thought a single bullet to the skull would do the trick, looks like you better think again.