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October 23, 2019, 02:59:30 am

Author Topic: Stages of developmental plasticity  (Read 10218 times)  Share 

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ktrah

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Stages of developmental plasticity
« on: July 14, 2012, 09:59:18 pm »
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Do we need to know the five stages from proliferation to myelination? I don't think it's in the Grivas book.

yearningforsimplicity

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Re: Stages of developmental plasticity
« Reply #1 on: July 17, 2012, 10:21:01 pm »
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You don't have to know it (I doubt it'd come up in the exam) but it could always come up in sacs I guess! :-\ Just a few definitions to learn so you might as well :)

5 stages of Developmental plasticity:
> proliferation - unborn baby's cells (that are eventually going to become neurons) divide and multiply creating 250,000 cells p/min
> migration - the newly formed neurons move or 'migrate' to their specified destination in the brain
> circuit formation - axons of the neurons branch out to target cells and form synapses with them
> circuit pruning - way too many neurons and synapses form in the brain (more than the child will ever need) and so these are eliminated or 'pruned' in this stage
> myelination - the axons of however many neurons remain are myelineated (insulated with a white fatty substance called myelin) and this helps to not only increase neural transmission but also stops electrical interference between neurons
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ktrah

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Re: Stages of developmental plasticity
« Reply #2 on: July 18, 2012, 12:31:50 pm »
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Awesome, thanks :)