label: medial longitudinal fasciculus
label_lc: medial longitudinal fasciculus
description: "The medial longitudinal fasciculus (MLF) is a pair of crossed fiber tracts, one on each side of the brainstem. These bundles of axons are situated near the midline of the brainstem and are composed of both ascending and descending fibers that arise from a number of sources and terminate in different areas. [WP,unvetted]."