The saccadic system comprises visually reflexive movements (derived from the parietal eye field) and memory-guided and volitional movements (derived from the frontal eye field). Supplemental eye fields receive input from frontal eye fields and program saccades projecting to the superior colliculus, basal ganglia, and thalamus. Projections are also sent to the paramedian pontine reticular formation (PPRF); rostral interstitial medial longitudinal fasciculus, which is more rostral in the midbrain; and motoneurons of the ocular motor cranial nerves (CNs). MLF = medial longitudinal fasciculus.