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Lecture 7

Lecture 7: Chapter 6

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Michelle Hilscher

PSYC18 Psychology of Emotion Lecture 7: Outline: 1) Historical emphasis on brain causing emotions 2) Breaking down the brain: Where do emotions happen & How are they controlled? 3) Recent research about amygdale & limbic system 4) A fundamental divide? Left- vs. right-brain debate @Z ]L ZZK}]}LZ; - Z}}Z}Z}; - Peripheralist (body feedback) vs centralist (feedback from brainCNS) model - Historically these models have been pitted against each other Recall Plato - Three-part soul J passionate soul resides in the chest causes emotions like courage - Centralist for cognition - Peripheralist for emotion Then Along came Galen - Body & brain responsible for distinct processes: 1. Heart, vital spirits - The heart passes the air thru a filter (vital spirits), allow for bodily processes 2. ]L7^Ko}ZL_]oZ refined animal spirits J these spirits cause emotions - For emotion: a peripheralist or centralist? CENTRALIST David Hartley (1705-1757) - Pain, pleasure, & complex emotions result from vibrations in the brain. - Emotional Conditioning o A result of fusion: o Co-activation of brain regions that becomes physiologically fixed due to repeated exposure to two stimuli. - ] Z]oL] K }LZ]oZ[Z doing math J you can get a physiological link between region A and B So What is Pleasure for Hartley? - Pleasure = moderate vibration - Pain = excessive vibration - 9]L]ZL}Z]L2K}ZL^oZ ]}L]Zo]K]:_ Modern Explanation: What parts of the brain produce & control emotions? - This necessitates a high-speed overview of brain anatomy: 1. Different brain regions = different functions. o Hind Brain: Controls basic physiological processes Pons J sleep wake cycles Cerebellum J balance and controlling motor movements o Forebrain: Regulates more complex actions of body. Cognition & emotion Limbic system & prefrontal cortex key for emotional processes including emotion regulation. Thalamus* J in charge of sensations, integrates them and delivers it upward J connected to entire limbic system, sends info directly to limbic system before the higher up processes (limbic system = automatic unconscious reflexes)
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