PSYC 3307 Lecture Notes - Lecture 12: Parahippocampal Gyrus, Temporal Lobe, Autonomic Nervous System

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2 Aug 2016
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PSYC 3307
-much different in humans than in animals
-emotion is largely tied to language in humans
-introspection: ask people to tell us how they’re feeling.
-mood adjective checklist: each adjective is associated to a mood. As a patient you are told to check off
adjectives which display your current mood
Stuss and Benson
-facial features alone are not enough to figure out someone’s emotional feelings
Pictures of isolated tribe
-even tribes that have not had contact with the outside world show similar facial expressions.
-this means that facial expressions are innate and are not learned socially
-even people who are blind from birth make the same facial expressions
James-Lange Theory of Emotion
-autonomic nervous system
-don’t need to have emotion, to be able to perceive it on others.
Physiological basis of emotion
-frontal lobes are important for emotional expression. If damaged it results in flat affect.
-Valence network: uses a lot of frontal and temporal lobe
-arousal network: parahippocampus is around the hippocampus, is allocortex.
Physiological basis of emotion
-damage to amygdala produces very different responses to typical stimuli.
-no fear response when amygdala is lesioned
Amygdala & emotion
-hippocampus is associated with explicit episodic memory
-high levels of stress can prevent the retrieval of these memories
-Kluver bucy: increased possibility of putting things mouth, eating, weight gain, hyper sexuality
Some important…
-brain regions that receive input from amygdala and emotional Reponses controlled by them.
-shows the projections of the amygdala
-predation: acting violently without a sort of defensive attitude or emotion. Carnivorous animals attack
in predation.
-when an animal is fighting for its life it is attacking in defensive rage
Two pathway controlling facial expression
-voluntary facial movements are not affected by emotional states
-involuntary facial movements are affected.
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-a joke that makes you laugh triggers the involuntary facial movements
-expression of emotion and control of the face is two different things.
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