What does "Subcortical white matter" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
"Subcortical white matter" refers to a part of the brain that is located beneath the outer layer, which is known as the cortex. This area is filled with nerve fibers, which are like the brain's wiring, connecting different parts of the brain to each other. These fibers are covered in a white, fatty substance called myelin, which is why this area is referred to as "white matter".
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