PSYCH Lecture 5 - The Brain II

PSYCH Lecture 5 - The Brain II - The Brain Part Two The...

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The Brain Part Two
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The Brain: The Hindbrain, Midbrain and Forebrain
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The HINDBRAIN
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Medulla: regulates automatic functioning: circulation, breathing, muscle tone, reflexes (sneezing/salivating) – survival- necessary. Can’t survive if destroyed Pons: Regulates sleeping, waking & dreaming Cerebellum: balance and coordination of movement; analyzes sensory information; may play a role in remembering simple skills, problem solving
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The MIDBRAIN
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Reticular Formation: modulates muscle reflexes, pain perception; active in states of arousal. Damage to this area may result in comas Tectum: involved in auditory and visual responses Tegmentum: Controls some motor functions, regulates awareness & attention and some autonomic functions
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The FOREBRAIN
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The Forebrain… Thalamus: relays motor impulses out of the brain; directs incoming sensory messages to higher centers Hypothalamus: Hunger, thirst, emotion, sex & reproduction, body temperature and the autonomic 4 Fs: fighting, fleeing, feeding, “mating”
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Pituitary Gland: master gland governed by the hypothalamus Limbic System: loosely interconnected structures involved in emotions. No clear boundaries
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Amygdala: Emotion and aggression evaluates sensory information, linked to fear
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