The Male Brain

Psychiatrist Louann Brizendine has a new book on the male human brain, and writes:

The "defend your turf" area -- dorsal premammillary nucleus -- is larger in the male brain and contains special circuits to detect territorial challenges by other males. And his amygdala, the alarm system for threats, fear and danger is also larger in men. These brain differences make men more alert than women to potential turf threats.

I always thought that women were territorial. According to this blog, her statement was based entirely on rat studies that do not apply to humans.