Brain: White Matter-Gray Matter (MRI)
At the level of the cerebral hemisphere, gray matter is mainly distributed in the periphery (cortex) while the white matter is deep. However, there is gray matter in depth of the brain called basal ganglia.
In the brainstem, gray matter is usually found in the depth while the white matter is superficial.
In the spinal cord, gray matter is located centrally, while the white matter forms the bulk of the superficial parts.
The distribution white matter - gray matter inside the brain is illustrated by MRI of the brain (axial sections). On some axial cuts, the thalamus and some basal ganglia (putamen, caudate nucleus, substantia nigra) were given as an example of "deep gray matter". On other cuts, the corpus callosum and internal capsule have been indicated as an example of "white matter tracts".