Emotion Flashcards
Face muscles being stimulated
Face muscles being stimulated made a smile or frown and is said not to be voluntary controlled
Double dissociation
M1 can drive voluntary smiles and limbic regions drive a proper smile
Two pathways of smiling
2 pathways of smiling
Volitional movement-voluntary facial expression gives a pyramidal smile
Motor cortex-Motor neurones pool in facial nucleus-Activation of facial muscles
Emotion Expression-Emotion facial paresis gives Duchenne smile
Hypothalamus-Motor neurones pool in facial nucleus-Activation of facial muscles
Kluver-Bucy syndrome
Associated with bilateral lesions
When temporal lobe was taken out in monkeys
Had a desire to explore everything
Emotional changes-sullied facial experience and would approach feared things
limbic system
part of the brain involved in our behavioural and emotional responses, especially when it comes to behaviours we need for survival
amygdala
amygdalae help define and regulate emotions. It is also responsible for remembering fearful situations from stimuli
Also involved in trustworthiness and reward and punishment
Amygdala as a nexus
Acts as a centre and Connects to multiple areas of the brain that are involved in emotion
What stimulating the amygdala does
Stimulating the BLA causes attention in the brain causing changes in acetylcholine
Role of novelty
When a stimulus is not expected/unpredictable it leads to higher fear levels
damage to amygdala
Causes aggression and raging and no fear
Right hemisphere in emotion
Critical for emotion processing and recognition
Mesolimbic reward pathway
Positive response in the brain to drugs
Reward lessions
BLA lesion responsible for small reward
OFC lesion responsible for big reward
Tested with mice with levers with food
Drug use
Affects dopamine release into the nucleus accubens
