Vasopressinergic neurons in the magnocellular nuclei of the human basal forebrain

Vasopressinergic structures were examined within the magnocellular nuclei of the human basal forebrain. Vasopressinergic neurons were found in all parts of the diagonal band nucleus, and less frequently in the anteromedial subnucleus of the basal nucleus (Meynert). They belong to the group of large multipolar neurons, previously defined as type I neurons, characterized by fine lipofuscin granules widely spread within the soma. Species differences exist in the topographic arrangement of vasopressinergic structures.