Editing White matter (section)

===Location===
White matter forms the bulk of the deep parts of the brain and the superficial parts of the [[spinal cord]]. Aggregates of grey matter such as the [[basal ganglia]] ([[caudate nucleus]], [[putamen]], [[globus pallidus]], [[substantia nigra]], [[subthalamic nucleus]], [[nucleus accumbens]]) and [[brainstem]] nuclei ([[red nucleus]], [[cranial nerve]] nuclei) are spread within the cerebral white matter.

The [[cerebellum]] is structured in a similar manner as the cerebrum, with a superficial mantle of cerebellar cortex, deep cerebellar white matter (called the "[[arbor vitae (anatomy)|arbor vitae]]") and aggregates of grey matter surrounded by deep cerebellar white matter ([[dentate nucleus]], [[globose nucleus]], [[emboliform nucleus]], and [[fastigial nucleus]]).  The fluid-filled [[ventricular system|cerebral ventricles]] (lateral ventricles, [[third ventricle]], [[Mesencephalic duct|cerebral aqueduct]], [[fourth ventricle]]) are also located deep within the cerebral white matter.