In con

THE MAMMILLOTHALAMIC TRACTS are distinctive features of the mammalian diencephalon. In the phylogenetic scale of mammals these structures main-tain, or even increase, their relative anatomical prominence. It is well estab-lished that the tracts consist of efferent fibers from the mammillary bodies projecting to shown conclu the anterior.sively for the thalamic nuclei cat that each la of the thalamus. Recent work has teral mammillary nucleus projects bilaterally to the anterodorsal nuclei, and fibers nuclei project ipsilaterally to the anteromedial nuclei. Collaterals or primary fibers also appear to to terminate in the ventromedial thalamic nuclei ( from and the medial mammillary anteroventral thalamic trast with the the paucity of well-described consistent and anatomy unequivo leave the tracts d