Unit 3 - 1: Emotion Flashcards
Emotion
Subjective mental state accompanied by distinctive cognition, behaviors, and physiological changes
Emotion: behaviors people show
Facial expressions, gestures, tone of voice
Emotion: physiological changes
Sweating, heart rate, blood pressure
Folk psychology on emotions
Feelings trigger body to react
James Lange theory
Body response evokes emotional experience
Canon bard theory
Feeling and body reactions happen at the same time
Why did emotions evolve?
Recipe for protective behaviors from ancestors
Superficial facial muscles
Control small movements in mouth, eyes, and nose
Deep facial muscles
Attach to bone and control large movements like chewing
Facial and trigeminal nerve
Cranial muscles that innervate facial muscles
Limbic system (5)
- Amygdala
- Cingulate gyrus
- Fornix
- Mammillary body of the hypothalamus
- Hippocampus
Decorticate rage/ sham rage
When cortex is removed, responses in aggressive behavior
Amygdala roles (3)
- Fear processing (activated before visual cortex)
- Positive emotions (sexual)
- Emotional recall (forming emotional memories)
Kliver Bucy Syndrome
Removing temporal lobe, loss of fear and aggression
Low road emotional processing
Projections go from thalamus to amygdala
High road emotional processing
Info goes through thalamus to sensory cortex to be processed
Fear processessing (4)
- Stimuli sent to thalamus
- Thalamus projects to either amygdala or sensory cortex
- Sensory cortex (+ hippocampus) send info to amygdala
- Amygdala medial emotional behavior, physiological responses
Amygdala Pathology (3)
- Capgras Delusion
- PTSD
- Loss/ injury of amygdala
Capgras delusion
People believe loved ones replaced by imposters (damage to the low road)
PTSD
Strong fear conditioning
Loss/ injury of amygdala
Rare genetic disorders, strokes, severe temporal lobe seizures result in loss of fear
Differentiating emotions
Great deal of overlap in the brain among different emotions, so context (sensory info + social cues) are important
