Restiform body

Fig. 103. The cerebellar nuclei of the cat. The transitional U-shaped region of the fastigial and posterior interposed nuclei is indicated by double hatching, be = brachium conjunctivum cr = restiform body DV = descending vestibular nucleus F = fastigial nucleus flo = floccular peduncle Ftail = tail of the fastigial nucleus lA = anterior interposed nucleus IP = posterior interposed nucleus L = lateral cerebellar nucleus LV = lateral vestibular nucleus MV = medial vestibular nucleus SV = superior vestibular nucleus u = uncinate tract Y = group y of Brodal and Pompeiano (1957).

Fig. 104. Two transverse, AChE-incubated sections through the cerebellar nuclei of the cat, A. Rostral section. B. Caudal section. Note medium-sized cells of dorsal group y in floccular peduncle and strongly AChE positive ventral group y along dorsal border of restiform body in (A) U-shaped nucleus between IP and F in (B). cr = restiform body F = fastigial nucleus flo-i-y = floccular peduncle with group y lA = anterior interposed nucleus IP = posterior interposed nucleus IP/F = U-shaped nucleus between F and IP L = lateral cerebellar nucleus sad = stria acoustica dorsalis.

Gacek (1977, 1979) used the term infracerebellar nucleus for the cells embedded in the fasciculus angularis (i.e. the floccular peduncle) as it arches over the restiform body and applied the term y group to the cells of the group 1 of Brodal and Pompeiano (1957). 

Fig. 120. Compartments in the white matter of the cerebellum of the cat. Drawings and reconstructions from Haggqvist and AChE-stained sections. Compartments are indicated with different symbols. A-D. Graphical reconstructions of the rostral aspect of the anterior lobe (A) and the posterior lobe (B), the dorsal aspect (C) and the caudal aspect (D) of the cerebellum. Compare Fig. 98. E-G. Transverse sections. A = A compartment ANS = ansiform lobule ANT = anterior lobe B = B compartment Cl-3 = Cl-3 compartments cr = restiform body D(l,2) = D(l,2) compartments F = fastigial lateral cerebellar nucleus PFL = paraflocculus PMD = paramedian lobule SI = simple lobule vest = vestibular nuclei X = X compartment III-IX = lobules IIl-IX.

Fig. 125. White matter compartments Cj, D, and D2 in the paraflocculus of the cat in transverse, AChE-reacted sections. Note concentric arrangement of the compartments in the dorsal and the ventral paraflocculus. A = caudalmost section D = rostralmost section. ANS = ansiform lobule brp = brachium pontis Cl-3 = Cl-3 compartments crest = restiform body D = dentate nucleus D (1,2) = D (1,2) compartments F = fastigial nucleus FLO = flocculus lA = anterior interposed nucleus IP = posterior interposed nucleus PFLD = dorsal paraflocculus PFLV = ventral paraflocculus PMD = paramedian lobule.

Fig. 148. Compartmentation in AChE-stained transverse sections of the flocculus, the ventral paraflocculus and the petrosal lobule and the caudal hemisphere of Saimiri sciureus. Note AChE stained borders of the compartments and the differential staining in the molecular layer AChE-positive cells of the basal interstitial nucleus of Langer are located along the borders of the compartments C2, 1 and 2 in (D) and (E). Group y is located within the floccular peduncle in (E), ANS = ansiform lobule br.p = brachium pontis c.rest = restiform body Cl-3 = C21-3 compartments D = dentate nucleus Dl,2 = Dl,2 compartments F = fastgial nucleus fis.post.lat = posterolateral fissure FLOC = flocculus lA = anterior interposed nucleus IP = posterior interposed nucleus Ib.petr = petrosal lobule PFLD = dorsal paraflocculus PFLV = ventral paraflocculus. Courtesy of Dr. D.T. Hess.

Fig. 180. Schematic illustration of the result of D-[ H]aspartate injection into lobules IV and V of the cerebellum of the rat. In the sketches of the cerebellar sections, retrogradely labelled axons and axon collaterals are indicated by lines and dots. Filled dots in the olives indicate the location of labelled cells. Retrograde labelling in cells of the inferior olive is also illustrated in more detail in the diagrams on the right. BP = brachium pontis DAO = dorsal acessory olive DN = Deiters nucleus FN = fastigial nucleus LL = lateral lemniscus LLV = ventral nucleus of the lateral lemniscusw MAO = medial accessory olive OI = inferior olive OS = superior olive PN = pontine nuclei PO = principal olive RB = restiform body I-X lobules I-X. Wiklund et al. (1984).

Fig. 198. Diagram of the restiform body and middle cerebellar peduncle and their contributions to the cerebellar commissure. The dorsal spinocerebellar tract (DST) is part of the restiform body the ventral spinocerebellar tract (VST) enters the cerebellum after passing rostral to the trigeminal nerve. Voogd (1967).

Fig. 202. Cuneocerebellar projection to ipsilateral cerebellum in the cat. Left side diagrams from antegrade axonal transport of [ Hjleucine in transverse sections. Borders of compartments in adjacent Haggqvist-stained sections are indicated on the right. Abbreviations A(l-3) = A( 1-3) compartment A = concentration of mossy fibers in A compartment B = B compartment bp = brachium pontis Cl -tC2 = concentration of mossy fibers in Cl and C2 compartments Cl-3 = Cl-3 compartment C3 = concentration of mossy fibers in C3 compartment cr = restiform body D = Dcompartment D = concentration of mossy fibers in D compartment F = fastigial nucleus FL = flocculus HVI = hemisphere of lobule VI (simple lobule) lA = anterior interposed nucleus L = dentate nucleus PAR = paramedian lobule PFLD = dorsal paraflocculus PFLV = ventral paraflocculus X = X compartment X/B = concentration of mossy fibers in border region of X and B compartments. Gerrits et al. (1985b).

Fig. 204. Diagrams of the distribution of degenerated, silver impregnated spinocerebellar and pontocerebellar fibers after lesions of the cervical cord and the pes pontis with the nucleus reticularis tegmenti pontis in sagittal (upper panels), transverse (middle panels) and horizontal sections (lower panels) through the cerebellum of Tupaia glis. Note zonal distribution in the vermis and pars intermedia and complementarity of the two projections to the cortex and to the cerebellar nuclei illustrated in middle and lower panels. ANS = antiform lobule cr = restiform body fl = primary fissure FLO = flocculus ia = anterior interposed nucleus ip = posterior interposed nucleus L = lateral cerebellar nucleus m = medial cerebellar nucleus PFL = parafloc-culus SI = simple lobule 1-X = lobules I-X. Voogd, unpublished.

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