The term Nucleus centralis superior thalami refers to one of five midline nuclei of the thalamus as defined in Olszewski-1952. The other nuclei in the group are the Nucleus centralis densocellularis, the Nucleus centralis inferior thalami, the Nucleus centralis latocellularis, and the Nucleus centralis intermedialis. Together they constitute the central medial nucleus and the rhomboidal nucleus ( Jones-1990 ).