Lecture 17: Emotional Behaviors Flashcards
What are the 10 common emotions?
Distress, anger, disgust, contempt, fear, shame, guilt, happiness, interest, surprise, etc.
What are emotional behaviors?
Avoidance (resulting from fear)
Aggression (resulting from anger)
Reinforced behavior (in order to get happiness)
What is the Limbic system known as?
EMOTION SYSTEM
What is the function of the prefrontal cortex?
The response system
What does the Amygdala do?
Respond to threatening stimuli.
What is the story of Phineas Gage?
Worked on a railroad and had a spike go through his head. This lead to strange behavior after. It severed descending projections from limbic system.
What are the sub-systems of the limbic system?
- Septum, Cingulate Gyrus, Nucleus Accumbens (NA –> stimulate to release dopamine)
- Amygdala
What do the septum, cingulate gyrus, and nucleus accumbens do?
Reinforce behaviors/rewards since it releases dopamine.
How is happiness defined?
Usually results from positively reinforced behavior.
What is a positive reinforcer?
Increases the likelihood of a behavior… usually because the reinforcer makes you happy.
What are the emotions associated with the amygdala? Behaviors?
E: Anger and fear
B: Aggression and Avoidance
What are anger and fear?
Short term, intermediate emotions. This is usually information that needs paying attention to.
What provides input to the Amygdala?
- Visual and Auditory Cortex
- Thalamus
What stimuli does the Amygdala respond to?
Facial expressions and vocal emotions.
What is the output of the Amygdala?
- Hypothalamus: sympathetic autonomic response (inc. HR, BP, and breathing)
- Mid-brain -> Pons (Hindbrain): flinching/freezing.
