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PSYC18H3 (275)
Chapter 6

Chapter 6 book notes - Understanding Emotions

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Gerald Cupchik

Chapter 6 Emotions and the Brain N Awakenings (1973) by Oliver Sacks describes treatment of survivors with sleeping sickness, a disease that started in Europe, eventually spreading throughout the world. N Such emotions, passions, and appetites, sexual and otherwise, were common with the administration of L- Dopa0110.98417:J8.K,3JL3J9K0,.9L;L9413472,O.447L3,901:3.9L43 How do brain mechanisms of emotion work? N 0:74L2,JL3J!%8.,38#, N == N Hindbrain, includes regions that control basic physiological processes o Medulla regulates CV activity o Pons controls sleep o Cerebellum involved in controlling motor movement N Forebrain o Thalamus integrating sensory information o Hippocampus critical for memory processes o Hypothalamus behavior, aggression and bodily temperature o Limbic system amygdala (involved in emotions), and cortex (associated with abilities to lead complex social lives + planning and intentional action) N == N Nerve messages are carried not by strings or hydraulics but by electric and chemical signals. N Emotions, however, are more than reflexes. Early research on brain lesions and stimulation N Bard (1928) and deprivation of cortex in cats found they were liable to make sudden, inappropriate and ill- L70.90,99,.N8.,OO08K,27,J0 proposed that the cortex inhibits this expression N Jackson (1959) lower levels of the brain are reflex pathways related to simple functions. At the highest and most recently evolved level, the cortex controls all level below it. N Similarly, brain trauma (ex: PG) leads to the diminished activity of higher regions of the brain, releasing the lower ones from inhibitions. The limbic system N Three main pathways (Papez) o 1) striatal region the stream of movement o 2) neocortex
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