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Summary diagram

Neuronal substrates involved in the control of horizontal eye movements. Schematic representation of sequential transneuronal labeling at 2 days (black dots), 3 days (red dots) and 3.5 (blue dots) days after injection of rabies virus into the medial rectus muscle. Note exponential increase of labeled elements with increasing time. AIN, abducens internuclear neurons in abducens nucleus; AOS, accessory optic system; cing, cingulate cortex; CX, cerebral cortex; DorsTegN, dorsal tegmental nucleus; DTN, dorsal terminal nucleus; DV, descending vestibular nucleus; FEF, frontal eye field; FF, fields of Forel; FLOCC, flocculus; HorSCC, horizontal semicircular canal; Hab, habenula; Hyp, hypothalamus; INC, interstitial nucleus of Cajal; ins, insular cortex; IO-DC, inferior olive-dorsal cap of Kooy; LTN, lateral terminal nucleus; LR, lateral rectus muscle; LV, lateral vestibular nucleus; MB, mammillary bodies; medMRF, medullary medial reticular formation; medLRF, medullary lateral reticular formation; MesRF, mesencephalic reticular formation; MN, motoneurons in abducens nucleus; MR, medial rectus muscle; MTN, medial terminal nucleus; MVmc, medial vestibular nucleus-magnocellular portion; MVpc, medial vestibular nucleus-parvocellular portion; NOT, nucleus of the optic tract; NPC, nucleus of the posterior commissure; PH, nucleus praepositus hypoglossi; PMTN, paramedian tract neurons; PPRF, paramedian pontine reticular formation; RCf, nucleus reticularis cuneiformis; ReThal, reticular thalamic nucleus; RN, red nucleus; Sept, septum; SpV, spinal trigeminal nucleus; SupraOc, supraoculomotor area; SC, superior colliculus; SN, substantia nigra; SV, superior vestibular nucleus; vLGN, ventral lateral geniculate nucleus; Y group, Y group of the vestibular nuclear complex; ZI, zona incerta; III, oculomotor nucleus; IV, trochlear nucleus; VI, abducens nucleus; 1°, primary vestibular neurons in Scarpa's ganglion