This document discusses emotions and the brain systems involved in emotional processing. It describes theories of emotion such as the James-Lange theory. It also discusses stress and how stress impacts physiological systems like the HPA axis and immune system. Prolonged stress can weaken the immune system. The document also covers topics like anxiety disorders, the role of the amygdala in fear processing, and medications used to treat anxiety like benzodiazepines.

1. Fear Anger Sadness Joy Disgust Surprise Emotional Behaviors

2. What is Emotion? Observable behaviors as opposed to feelings which are private experiences

19. Escape, Fear & Anxiety The Amygdala Fear is a temporary experience Anxiety is longer lasting The startle reflex The response to a sudden, unexpected loud noise The amygdala enhances the startle reflex by sending axons to the hypothalamus & relaying information to the central gray area of the midbrain