Thread: Grey and white matter in the brainstem

Amateur question.

I know in the spinal cord there is grey matter with white matter surrounding it, and this is reversed in the cerebral cortex.

But what is the arrangement of grey and white matter in the brainstem?

Thanks.

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

Thanks a lot.
Stephen