bb2011 ANP220 08 Brain expansion

bb2011 ANP220 08 Brain expansion - Readings for today...

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1 Is brain expansion linked to stone tools? ANP 220 meeting #09 Readings for today discuss On man’s use of fire, with comments on tool-making and hunting (Kenneth P. Oakley) The radiator theory of brain evolution (Dean Falk) Readings for today discuss On man’s use of fire, with comments on tool-making and hunting (Kenneth P. Oakley) why did brains get bigger? adaptive value The radiator theory of brain evolution (Dean Falk) how could brains get bigger? mechanism Four problems Tinbergen (1963) How does it work? primary mechanism physiology, sensory-motor How does it develop? ontogeny genetic/ developmental What is it good for? function adaptive/ survival value How does it evolve? evolution historical pathway “Immediate” (proximate) causes “Fundamental” (ultimate) causes
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2 Brain evolution ultimate causes “prime movers” adaptive value of large brain selective forces & possible benefits proximate causes “prime releasers” underlying mechanism allowing to have large brain physiology/ morphology Goals for today (and next Wednesday) brain evolution in hominins early ideas about brain expansion first big brains, then modern body? why larger brains? paper by Kenneth Oakley what selects for big brains? how can we afford such big brains? paper by Dean Falk (and Ann Gibbons) brain radiator (and expensive tissues, human gut, cooking) Early ideas about brain evolution First big brains, then modern body? 19 th century preconceived ideas intelligence differentiates humanity first big brains later modernization of body
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3 19 th century preconceived ideas intelligence differentiates humanity first big brains later modernization of body First major discovery
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bb2011 ANP220 08 Brain expansion - Readings for today...

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