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3 iul. 2024 · White matter diseases are a group of conditions that predominantly or significantly affect the white matter of the brain. They comprise a vast heterogeneous group and have a variety of appearances and presentations. They cause disease by altering the process of normal myelination .
- Demyelinating Disorders
Demyelinating disorders are a subgroup of white matter...
- Adem
Acute disseminated encephalomyelitis (ADEM), as the name...
- Leukodystrophies
vanishing white matter disease. X-linked...
- Demyelinating Disorders
2 iul. 2024 · The white matter (TA: substantia alba) is the substance of the brain and spinal cord that contains the fiber tracts of neuronal axons in the central nervous system. The term is due to the paler color of the lipid-rich myelin that encases the axons in the tracts compared to the grey matter, which contains predominantly the neuronal cell bodies.
26 iun. 2024 · Location of the plaques can be infratentorial, in the deep white matter, periventricular, juxtacortical or mixed white matter-grey matter lesions. Even on a single scan, some features are helpful in predicting relapsing-remitting vs progressive disease.
29 iun. 2024 · Similar to the spinal cord, the fourth ventricle is surrounded by white matter on the outside, with the gray matter on the inside. The dorsal medulla also is the site of origin for the last seven cranial nerves, most of which exit the medulla ventrally.
30 iun. 2024 · What Is White and Gray Matter? White matter makes up the deeper brain tissue. It contains nerve fibers and nerve cells covered by myelin, a substance that gives the tissue its white color, protects it, and speeds electrical signals.
2 iul. 2024 · A key distinction between gray matter and white matter is the absence or presence of myelin, a fatty insulating sheath on neurons that imparts a white appearance; whereas white matter is myelinated, gray matter is unmyelinated.
Acum 2 zile · Abstract. Although white matter (WM) accounts for nearly half of adult brain, its wiring diagram is largely unknown. Here, an approach is developed to construct WM networks by estimating interregional morphological similarity based on structural magnetic resonance imaging. It is found that morphological WM networks showed nontrivial topology ...
