I just watched this very cool video called “How Does Your Memory Work”.  I don’t know if this really captures the essence of this documentary. They move through several real life examples of how the brain works through the fight or flight response using graphics and great explanations in simple terms.

The video addresses fear responses in the military and base jumpers as well as pleasure centres of the brain in both base jumping, gambling and sexual arousal for example. The concept of pleasure seeking related to increase in dopamine is measured  via brain scans as is cortizol in the stress response.

Research on psychopathic brains is covered as well.

Really interesting. Check it out