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Is the structure of human brain white matter fixed at/near birth?

Discussion in 'Biology' started by Cort Ammon, Oct 8, 2018.

  1. Cort Ammon

    Cort Ammon Guest

    I have been reading that, with exceptions for a few parts of the human brain, no neurogenesis occurs, so no new neurons are created. I have also heard that no new axons are formed through the white matter of the brain after birth as well. I also know that the axons are myelinated, minimizing crosstalk and other interesting structural effects that might occur.

    Between those, does that imply that the structure of the white-matter of the brain is fixed at a very young age, and never changes through our life? It seems like a natural conclusion from the data, but it feels counterintuitive when contrasted with the continuous creation and destruction of synapses which happens so close nearby.

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