Models of Saccade System that Include the Superior Colliculus.

Extraocular motoneurons receive excitatory or inhibitory signals from saccade-related burst neurons in the brain stem during saccades. These premotor neurons are driven mainly by the superior collliculus in the midbrain. Neural models of the saccade system that include the superior colliculus are reviewed with regard to whether the superior colliculus is included in a local feedback loop of the saccade system and how a spatially encoded signal in the superior colliculus is transformed into a temporally encoded signal in the motoneurons.