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Lecture 17 Sakai 2010

Lecture 17 Sakai 2010 - Lecture 17 Lecture Central Nervous...

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Lecture 17 Lecture 17 Central Nervous System Central Nervous System Hormones Hormones Pituitary Gland Pituitary Gland 1 November 2010 1 November 2010
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Nervous Systems Simple Neural Circuit
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Vertebrate CNS Brain and Spinal Cord Gray versus White Matter
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Vertebrate CNS Organizational Features Afferent Efferent
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Vertebrate CNS Principles of Organization I. Localization of Brain Function
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Vertebrate CNS Principles of Organization II. Topographic Maps Size of mapped region corresponds with density of sensory receptors
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Vertebrate CNS Principles of Organization III. Brain Size Matters 1 g of hamster brain controls 107 g of hamster body 1 g of elephant brain controls 1,160 g of elephant body 1 g of hummingbird brain controls 24 g of hummingbird 1 g of ostrich brain controls 2,900 g of ostrich
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Vertebrate CNS Principles of Organization III. Brain Size Matters Mammals Brain Mass = 0.059(Body Mass) 0.76 Reptiles Brain Mass proportional to M 0.5 Why isn’t brain mass proportional to M 0 ? Or M 0.25 ?
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Vertebrate CNS Principles of Organization IV. Evolutionary Expansion of Forebrain Areas
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