Purkinje cell diagram

Figure 30-15 (A) Diagram of the two-dimensional tree formed by dendrites of a single Purkinje cell of the cerebellum. From Llinas.404 (B) Schematic diagram showing input and output pathways for Purkinje cells. (C) Recordings of output from four different neurons of the inferior olive. These action potentials are thought to arise from oscillations that arise within the neurons or within arrays of adjacent neurons coupled by electrical (gap junction) synapses. These oscillations synchronize the generation of action potentials so that some cells oscillate in synchrony while others (e.g., cell 4 above) do not. From McCormick.412...

Fig. 1. Cerebellar cortical circuits. Top. Diagram showing the main mossy fiber-granule cell-Purkinje cell circuit and the innervation of the granule cells by the axonal plexus of the Golgi cell. A mossy fiber a granule cell B Purkinje cell axon b parallel fiber c Golgi cell d Purkinje cell. Bottom. Similar diagram showing the main cortical circuit and the connection of the basket cell with the Purkinje cell somata. A mossy fiber a granule cell B Purkinje cell axon b basket cell C climbing fiber c Purkinje cell soma. Redrawn from Ramon y Cajal (1911).

Fig. 2. Diagrams of the cerebellar circuit. Inhibitory neurons are indicated in black. A. Main circuit. B. Cortical interneurons and recurrent pathways. Abbreviations B = basket cell cf = climbing fiber G = Golgi cell GR = granule cell 10 = inferior olive mf = mossy fiber nc = nucleocortical axons no = nucleo-olivary axons pcc = recurrent Purkinje cell axon collaterals P cell = Purkinje cell PCN = precerebellar nuclei pf = parallel fiber pi = pinceau of basket cell axons S = stellate cell UBC = unipolar brush cell I = extracerebellar mossy fiber 2 = nucleo-cortical mossy fiber 3 = mossy fiber collateral of uni-polar brush cell.

Fig. 3. A. Nissl-stained section of the cerebellar cortex of the cat. G = Golgi cell Gr = granule cells P = Purkinje cell, asterisks protoplasmatic islands of Held, Bar = 20 fira. B. diagram of the cerebellar cortex of Purkinje (1837).

Fig. U. Diagram of the interaction of Purkinje cell dendrite with a climbing fiber and several parallel fibers. A proximal Purkinje cell dendrite (pd) shows stubby thorns contacted by a climbing fiber (cf), whereas parallel fibers (pO synapse on spines protruding from a spiny branchlet (sb). Rossi et al. (1991).

Fig. 123. Diagram of the corticonuclear projection in the cat. Based on retrograde labelling of Purkinje cells and their axons after injections of HRP in their target nuclei. A = A zone A = Anterior interposed nucleus ANS = ansiform lobule B = B zone C1-C3 = C1-C3 zones CRII = crus II of the ansiform lobule D1-D2 = D1-D2 zones DV = descendng vestibular nucleus F = fastigial nucleus FLOC = flocculus IP = posterior interposed nucleus L = lateral eerebellar nucleus LOB POST = posterior lobe LOB ANT = anterior lobe LV = Deiters nucleus MVmc = magnocellular medial vestibular nucleus MVpc = parvicellular medial vestibular nucleus PFL = paraflocculus PFLD = dorsal paraflocculus PFLV = ventral paraflocculus PMED = paramedian lobule SV = superior vestibular nucleus I-X = lobules I-X. Bigare (1980).

Fig. 150. Diagram of the afferent olivocerebellar projection according to Katayama and Nisimaru (1988) and the efferent projection of the zones of the nodulus to the vestibular and cerebellar nuclei according to Wylie et al. (1994) in the rabbit. P = group 8 of the medial accessory olive DC = dorsal cap of Kooy F = fastigial nucleus IP = posterior interposed nucleus MV = medial vestibular nucleus P cell = Purkinje cell SV = superior vestibular nucleus VLO = ventrolateral outgrowth I-VI = zones of rabbit nodulus, numbered according to Katayama and Nisimaru (1988).

Fig. 188. Diagram of the origin of the climbing fiber afferents and the projections of the Purkinje cells of the five Purkinje cell zones of the flocculus of the rabbit. The zones and the corresponding white matter compartments containing their Purkinje cell axons and climbing fiber afferents are indicated with the same symbols. 1-4 = compartments and zones 1-4 DC = dorsal cap fl-4 = folia 1-4 of the rabbit flocculus fm = medial folium of the flocculus fp = folium p of the ventral paraflocculus Ip = posterior interposed nucleus MAO = medial accessory olive MV = medial vestibular nucleus SV = superior vestibular nucleus VLO = ventrolateral outgrowth Y = group y. From Tan et al. (1995b,c).

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