In the myelinated cell branches of the neuron, that is, in the ordinary nerve fibres, no visible change has ever been demonstrated as the result of any normal activity, however great - a striking contrast to the observations obtained on the perikarya.
The excitable foci of the cerebral cortex are well myelinated long before the unexcitable are so.
These sclerotic plaques are the decay in the myelin sheathing of the myelinated axons from distinct regions within the CNS.
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