Fig. 45. Established neuroanatomy of pulse (burst) and pause generator for horizontal saccades. Abducens motoneurons (AMN) and abducens internuclear neurons (AIN) are excited by ispilateral reticular excitatory burst neurons (EBN) and inhibited by contralateral inhibitory burst neurons (IBN). EBNs also drive IBNs. Omnipause neurons (OPN) keep EBNs and IBNs silent except for the execution of saccades. The dashed line represents the midline.