ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Psychology => Topic started by: ktrah 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.
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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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Awesome, thanks :)