The term Nucleus pulvinaris medialis ventralis (Hassler) ? , nrefers to a substructure of the medial pulvinar nucleus of the thalamus. It, the Nucleus pulvinaris medialis dorsalis (Hassler), the Nucleus pulvinaris medialis zentralis (Hassler) and the Nucleus pulvinaris medialis internus (Hassler) constitute the Nucleus pulvinaris medialis (Hassler) ( Jones-1990 ).