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Lecture 8


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University of Toronto Mississauga
Alison Fleming

Emotion, Mood Disorders, Depression Intra-subjective: what you feel within and ONLY YOU experience them and they exist within you Cannot be verified, but behaviours can be verified In modern psychology, motivation and decision making cannot be distinguished from one another  Metabolic action: How fit are you to make a decision? Why do we experience emotions? Are we fit/functional w/o them? Cannon-Bard theory says patterns of arousal occur simultaneous to particular emotion experienced  But do they CAUSE one another? After a bang, you have a startle response (behavior which is not seen in the views we have: folk, Cannon-Bard, etc.) When does emotion occur in relation to stimuli and behavior? Perception is caused by stimulus, then you RUN while your body has an autonomic response, and THEN you feel fear -> EMOTION cannot be the CAUSE of the BEHAVIOUR  But we can have some emotions which DO CAUSE behaviors ---> Mood Disorders  In different contexts, behavior and autonomic response remain same BUT emotion changes accordingly (fear vs. joy)  Even if no motor response action is selected, you still experience emotion  Sympathetic blockage due to injury or propranolol, you can still experience emotion Schachter's theory: perception has to transmit stimulus to NS and another part must look at context  Autonomic response affects intensity of emotion  Emotion experienced will affect future interpretations of stimuli and continuing autonomic arousal (feedback)  One emotional response doesn’t directly cause the next one but is a determinant in how it'll be perceived  Schachter & Singer experiment: if your brain becomes aware that your SNS has been activated it will come up with a reason for that; if reason does not provide a likely cause, one will be invented -> congruent with memory and current context  NOW emotion is in a Causal Feedback Loop Where is this all happening? Limbic system  SNS and ParaSNS normally oppose one another -> try to reach level of homeostasis  Spinal cored & brainstem reflexes are responsible for most of your ongoing body behavior  Pontine brainstem mechanisms are responsible for the orienting reflex and though the thalamus, gating information to the basal ganglia, limbic system (habits) and telencephalon (executive function, volition) o You may engage in habitual behavior in response to a stimulus and m
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