New research shows for the first time that there are two areas of the brain involved in processing threats, such as an attacking predator.
Imagine walking alone at night. Up ahead on the sidewalk, you notice a person lurking in the shadows, and a chill runs down your spine. You pause as you run through your options. Do you turn around and go back the way you came? Cross to the other side of the street? Or do you ignore your fear and keep walking straight ahead? Now picture another scenario in which you're strolling through a crosswalk. Suddenly, you're startled by the sound of tires screeching and a glimpse of something moving quickly toward you. You leap back just as a car barrels past, barely missing you. In both scenarios, you are facing a threatening situation, but the threats were very different in nature.
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