Brain III - Brain III Prefrontal cortex (PFC) Laterality of...

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1 Brain III Prefrontal cortex (PFC) Laterality of emotion perception, expression
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2 Prefrontal cortex – good? Bad?
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Ventromedial Cortex
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4 Iron bar and skull of Phineas Gage
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Phineas Gage (from Harlow, 1868)
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6 Phineas Gage character change: Before Accident (age 25) Loyal & trustworthy Dedicated to job and community After Accident Capricious, childish, obstinate Offensive language A new plan everyday Extensive wanderings
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Patient EVR Before lesion Chief accountant Superior intelligence Married Role model Large bilateral ventral/orbital tumor removed causing the lesion Eslinger & Damasio (1985)
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Patient EVR After removal of tumor (lesion made) Normal memory Superior intelligence Intact knowledge of complex issues After removal of tumor (lesion made) Poor judgment Cynical attitude Inappropriate language Fleeting relationships
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At 44 years old, he is currently considering a third marriage to a person he described as a “spoiled 58-year-old-woman,” a “semiprominent socialite.” He is trying to persuade her to finance a “luxury travel business” to drive “wealthy people “ on vacation around the country in a motor home.” (Elisinger & Damasio, 1985, p. 1733)
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Patient EVR After removal of lesion Correct knowledge of social rules and behavior, but not to applied to his own actions Goals & plans frequently changed and largely unrealistic Long-term goals were not accomplished because the short-term goals interfered
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Bechara et al. Gambling task Risky decks: $100 reward, large occasional penalty. But
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Brain III - Brain III Prefrontal cortex (PFC) Laterality of...

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