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neuraldev2_12_10 - Snow storm of the century review What is...

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Snow storm of the century? 2/12/2010
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review What is a fundamental and defining feature of the brain? Plasticity What developmental process begins in earnest after birth? Myelination What type of brain areas develop or mature first? Simpler, Sensory
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Review Functionally, what type of brain area matures last? Complex, Cognitive What explains the quadrupling in size of the brain? Elaboration of the dendrites and axons What do we mean by critical period? Essential for process or formation
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Elaboration Hebb (1947) Cognitively stimulating environments help maximize intellectual development Larger and more synapses More elaborate dendritic branching Larger and more astrocytes Spines
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“Genie” Confined to small dark room from 20 months Sensory and social deprivation for a decade Some language development, but little speech Unusual object exploration What about Deprivation?
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Plasticity Neurogenesis Enrichment
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