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  2. Node of Ranvier - Wikipedia

    en.wikipedia.org/wiki/Node_of_Ranvier

    This organization demands a tight developmental control and the formation of a variety of specialized zones of contact between different areas of the myelinating cell membrane. Each node of Ranvier is flanked by paranodal regions where helicoidally wrapped glial loops are attached to the axonal membrane by a septate-like junction.

  3. Myelinogenesis - Wikipedia

    en.wikipedia.org/wiki/Myelinogenesis

    Myelin is formed by oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system.Therefore, the first stage of myelinogenesis is often defined as the differentiation of oligodendrocyte progenitor cells (OPCs) or Schwann cell progenitors into their mature counterparts, [4] followed by myelin formation around axons.

  4. Hyperintensity - Wikipedia

    en.wikipedia.org/wiki/Hyperintensity

    MRI scans showing hyperintensities. A hyperintensity or T2 hyperintensity is an area of high intensity on types of magnetic resonance imaging (MRI) scans of the brain of a human or of another mammal that reflect lesions produced largely by demyelination and axonal loss.

  5. White matter - Wikipedia

    en.wikipedia.org/wiki/White_matter

    White matter is named for its relatively light appearance resulting from the lipid content of myelin. However, the tissue of the freshly cut brain appears pinkish-white to the naked eye because myelin is composed largely of lipid tissue veined with capillaries. Its white color in prepared specimens is due to its usual preservation in formaldehyde.

  6. Myelin - Wikipedia

    en.wikipedia.org/wiki/Myelin

    The process of generating myelin is called myelination or myelinogenesis. In the CNS, oligodendrocyte progenitor cells (OPCs) differentiate into mature oligodendrocytes, which form myelin. In humans, myelination begins early in the 3rd trimester, [ 11 ] although only little myelin is present in either the CNS or the PNS at the time of birth.

  7. Development of the nervous system in humans - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_nervous...

    Using structural MRI, quantitative assessment of a number of developmental processes can be carried out including defining growth patterns, [9] and characterizing the sequence of myelination. [10] These data complement evidence from Diffusion Tensor Imaging (DTI) studies that have been widely used to investigate the development of white matter.

  8. Oligodendrocyte - Wikipedia

    en.wikipedia.org/wiki/Oligodendrocyte

    Myelination is only prevalent in a few brain regions at birth and continues into adulthood. The entire process is not complete until about 25–30 years of age. [24] Myelination is an important component of intelligence, and white matter quantity may be positively correlated with IQ test results in children. [24]

  9. Outline of brain mapping - Wikipedia

    en.wikipedia.org/wiki/Outline_of_brain_mapping

    The following outline is provided as an overview of and topical guide to brain mapping: . Brain mapping – set of neuroscience techniques predicated on the mapping of (biological) quantities or properties onto spatial representations of the (human or non-human) brain resulting in maps.