Synaptic pruning

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4 Terms

1
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Define synaptogenesis

New synapses formed between neurons- exuberant before birth + post natal (possibly one million new synapses created). Produces more than necessary (twice as many in a 3 year old than adult).

2
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What happens after 3 years?

Synaptic loss and neurons used most experiencing greater neurotransmitter activity where it strengthens synapses. Inactive synapses die- pruned.

3
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What do myelinated neurons allow?

Allow them to conduct electrical impulses more efficiently in parts of the nervous system where this is crucial.

4
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What’s the point of synaptic pruning?

Creates organisation in the brain, so areas become specialised for certain functions.