Cerebellar nuclei nucleo-olivary projection

Fig. 101. Diagram of the projections of the dentate and interposed cerebellar nuclei (CN) and the mossy and climbing fiber recurrent circuits. The non-GABAergic projections of the nuclei divide in ascending (A and C) and descending (B) branches. The descending branch terminates in the nucleus reticularis tegmenti pontis (NRTP), one of the main sources of the mossy fiber collateral projection to the nuclei. The ascending branch terminates in the red nucleus (n. ruber), the nuclei of the mesodiencephalic junction MDJ, a relay in the recurrent cerebellomesencepho-olivary loop, and in the ventral tier nuclei of the thalamus (VA/VL). The GABAergic nucleo-olivary projection (2) terminates in the inferior olive (lO). Courtesy of Dr. T.J.H. Ruigrok.

Fig. 164. The nucleo-olivary projection in the rat. Data from Ruigrok and Voogd (1990). Upper and lower block diagrams represent the cerebellar and vestibular nuclei, and the subdivisions of the inferior olive respectively. According to Ruigrok and Voogd (1990) the cerebellar nuclei and their olivary target nuclei can be considered as a continuum, stretching from the rostral medial cerebellar nucleus, projecting to caudal MAO, to the lateral vestibular nucleus, projecting to the dorsal fold of the DAO. DL = dorsolateral protuberance of the medial cerebellar nucleus DMC = dorsomedial cell column IntA = anterior interposed nucleus IntDL = dorsolateral hump IntP = posterior interposed nucleus lOD = dorsal accessory olive lODM = dorsomedial cell column lOM = medial accessory olive lOP = principal olive Lat = lateral cerebellar nucleus LVe = lateral vestibular nucleus Med = medial cerebellar nucleus VL = ventrolateral outgrowth.

Dietrichs E, Walberg F (1985) The cerebellar nucleo-olivary and olivo-cerebellar nuclear projections in the cat as studied with anterograde and retrograde transport in the same animal after implantation of crystalline WGA-HRP. II. The fastigial nucleus. Anat. Embryoi. 173, 253-261. 

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