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Lecture 8 Brain Structure

Lecture 8 Brain Structure - Brain Structure and Function"If...

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Brain Structure and Function
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“If the human brain were so simple that we could understand it, we would be so simple that we couldn’t” -Emerson Pugh, The Biological Origin of Human Values (1977)
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Phineas Gage September 13th, 1848 Phineas 25 years old Rutland & Burlington Railroad, Cavendish, VT Paving the way for new RR tracks “Tamping Iron” 1.25in x 3ft
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Accident Quick Recovery Months later: “No longer Gage” Before: capable, efficient, best foreman, well-balanced mind After: extravagant, anti-social, liar, grossly profane Stint with P.T Barnum Died 12 years later Watch Clip Phineas Gage
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Evolution of the Brain Reptilian Paleomammalian Neomammalian
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The Brain Brainstem responsible for automatic survival functions Medulla controls heartbeat and breathing
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BRAINSTEM Heart rate and breathing CEREBELLUM  Coordination and balance Parts of the Brain amygdala pituitary hippocampus THALAMUS    Relays  messages
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Reticular Formation Widespread connections Arousal of the brain as a whole Reticular activating system (RAS) Maintains consciousness and alertness Functions in sleep and arousal from sleep
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The Cerebellum helps coordinate voluntary movement and balance
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The Limbic System Hypothalamus, pituitary, amygdala, and hippocampus all deal with basic drives, emotions, and memory Hippocampus Memory processing Amygdala Aggression (fight) and fear (flight) Hypothalamus Hunger, thirst, body temperature, pleasure; regulates pituitary gland (hormones)
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The Limbic System Hypothalamus neural structure lying below ( hypo
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