The term medial olfactory tract refers to nerve fibers long thought to project from the main olfactory bulb (MOB) to midline structures of the cerebrum in the human and other primates. It does not appear in brain atlases of the rat ( Swanson-2004 ) or mouse ( Hof-2000 ). It is now regarded as a misnomer, since the structure it represents has been shown not to contain neuronal axons, even in the human ( Price-1990 ). See also: olfactory trigone.