aa-76 - that are used survive & fluorish Those...

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2/15/2011 1 how studying? MRIs- normal teen brains @2yr intervals discovery-frontal cortex? overproduction just before puberty overproduction , overproduction , gray , thinking mistakenly , incorrect By age 6? 95 % of adult size compares thickening to b tree growing extra branches and twigs What happens after this proliferation (over- production?) unused branches/ pathways are pruned pruning gives the “tree” its shape for the future “Use it or lose it principle” cells/connections
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Unformatted text preview: that are used survive & fluorish Those not used will wither and die These are the cells & connections that will be hard-wired for life 2/15/2011 2 still being built during teen yrs prefrontal cortex engage in risky behavior immature prefrontal cortex particularly cruel irony of nature At time when brain is most vulnerable-it is also the time when teens most likely to experiment with alcohol/other drugs...
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aa-76 - that are used survive & fluorish Those...

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