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10 Cards in this Set
- Front
- Back
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During the first years of life what grows faster?
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the brain grows the fastest.
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Brain growth....
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From ages 2 to 6 the brain increases from 70% of adult size 90%o adult size.
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info on synaptic growth and myelination of axons.
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together synaptic growth and myelination of axons result in a high need for energy. energy metabolism in the cerebral cortex peak at around this age.
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what is synaptic pruning and how it relates to synaptic growthn?
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while a high number of synapses helps a young brain's plasticity, neurons that are seldom stimulated begin synaptice pruning. the neurons lose their connective fibers and the number of synapses are reduced.
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frontal lobe area growth...
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there is a rapid growth from 3 to 6 years in the frontal lobe areas devoted to attention and planning and organizeing behavior.
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left hemisphere.
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the left hemisphere is especially active between 3 and 6 then level off. in contrast the right hemisphere increases steadily to age 10. the left hemisphere is vital to language acquistiton and expression. the broca's area the wernicke's area. and the primary auditory cortex are all located on the left hemisphere.
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left handed family.
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there is one theory that proposes most childreen inherit a bias towards handedness. but left handed parents show only a weak tendency to have left handed children and there is evidence that experience might sway children towards left handedness.
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Tanzania Africa left handedness.
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In Tanzania Africa children are physically restrained and punished for favoring their left hand, and more subsequently less then 1% of adults are left handed.
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What is the Cerebellum?
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the little brain located under the occipital lobe at the rear of the head, the cerebellum aids in balace and control of bodily movement, particularly fine motor movement. asons linking the cerebellum to the cerebral cortex grow and myleinate from birth through the preschool years. children make dramatic gains in the ability to play hopscotch, throw a ball, and write letters of the alphabet. these neuronal connections also help coordiante thinking.
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What is Hippocampus?
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A sub cortical structure that plays a vital role in memory and spatial images that help us find our way. myelination is particulary rapid in the 2nd half of the first year when recall memory and independent movement emerge. over the preschool and elementary years the hoppocamps continues to make swift connections with surrounding areas of the cerebral cortex and the frontal lobes. the ability to store and retrieve information expansion of autobiogrphical memory.
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