Summary
A projection from the periaqueductal grey (PAG) to the lateral reticular nucleus (NRL) in the cat was demonstrated by means of retrograde transport of the wheat germ agglutinin-horseradish peroxidase complex. The connection has its main origin ipsilaterally in the ventral part of the caudal PAG, but scanty projections from other parts of the PAG were also found. The neurons projecting to the NRL are of varying shapes and sizes, but most cells have a maximum diameter of less than 20 μm. The findings are discussed in relation to the other afferent and efferent connections of the NRL.
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References
Basbaum AI, Fields HL (1979) The origin of descending pathways in the dorsolateral funiculus of the spinal cord of the cat and rat: further studies on the anatomy of pain modulation. J Comp Neurol 187:513–532
Basbaum AI, Clanton CH, Fields HL (1978) Three bulbospinal pathways from the rostral medulla of the cat. An autoradiographic study of pain modulating systems. J Comp Neurol 178:209–224
Batton RR III, Jayaraman A, Ruggiero D, Carpenter MB (1977) Fastigial efferent projections in the monkey: an autoradiographic study. J Comp Neurol 174:281–306
Brodal A (1943) The cerebellar connections of the nucleus reticularis lateralis (nucleus funiculi lateralis) in rabbit and cat. Experimental investigations. Acta Psychiatr (Kbh) 18:171–233
Brodal A (1949) Spinal afferents to the lateral reticular nucleus of the medulla oblongata in the cat. An experimental study. J Comp Neurol 91:259–296
Brodal P (1975) Demonstration of a somatopically organized projection onto the paramedian lobule and the anterior lobe from the lateral reticular nucleus: an experimental study with the horseradish peroxidase method. Brain Res 95:221–239
Brodal P, Maršala J, Brodal A (1967) The cerebral cortical projection to the lateral reticular nucleus in the cat, with special reference to the sensorimotor cortical areas. Brain Res 6:252–274
Brodal P, Dietrichs E, Bjaalie JG, Nordby T, Walberg F (1983) Is lectin-coupled horseradish peroxidase taken up and transported by undamaged as well as by damaged fibers in the central nervous system? Brain Res 278:1–9
Castioglioni AJ, Gallaway MC, Coulter JD (1978) Spinal projections from the midbrain in the monkey. J Comp Neurol 178:329–346
Cedarbaum JM, Aghajanian GK (1978) Afferent projections to the rat locus coeruleus as determined by a retrograde tracing technique. J Comp Neurol 178:1–16
Chan-Palay V (1977) Cerebellar dentate nucleus: organization, cytology and transmitters. Springer, Berlin Heidelberg New York
Chan-Palay V, Palay SL, Brown JT, Itallie C (1977) Sagittal organization of olivocerebellar and reticulocerebellar projections: autoradiographic studies with 35S-menthionine. Exp Brain Res 30:561–576
Cohen C, Chambers WW, Sprague JM (1958) Experimental study of the efferent projections from the cerebellar nuclei to the brain stem of the cat. J Comp Neurol 109:233–259
Corvaja N, Grofová I, Pompeiano O, Walberg F (1977) The lateral reticular nucleus in the cat. I. An experimental anatomical study of its spinal and supraspinal afferent connections. Neuroscience 2:537–553
Courville J (1966) Rubrobulbar fibres to the facial nucleus and the lateral reticular nucleus (nucleus of the lateral funiculus). An experimental study in the cat with silver impregnation methods. Breain Res 1:317–337
Courville J, Faraco-Cantin F, Marcon L (1983) Projections from the reticular formation of the medulla, the spinal trigeminal and lateral reticular nuclei to the inferior olive. Neuroscience 9:129–139
Dietrichs E (1983a) Cerebellar nuclear afferents from the lateral reticular nucleus in the cat. Brain Res 288:320–324
Dietrichs E (1983b) Cerebellar cortical afferents from the periaqueductal grey in the cat. Neurosci Lett 41:21–26
Dietrichs E, Haines DE (1985) Observations on the cerebellohypothalamic projection, with comments on non-somatic cerebellar circuits. Arch Ital Biol 123:133–139
Dietrichs E, Walberg F (1979) The cerebellar projection from the lateral reticular nucleus as studied with retrograde transport of horseradich peroxidase. Anat Embryol 155:273–290
Dietrichs E, Haines DE, Qvist H (1985) Indirect hypothalamocerebellar pathway? Demonstration of hypothalamic efferents to the lateral reticular nucleus. Exp Brain Res (In press)
Edwards SB (1972) The ascending and descending projections of the red nucleus in the cat: an experimental study using an autoradiographic tracing method. Brain Res 48:45–63
Eisenman LM (1982) The reticulocerebellar projection to the pyramis and copula pyramidis in the rat: an experimental study using retrograde transport of horseradish peroxidase. J Comp Neurol 210:30–36
Eller TW, Chan-Palay V (1976) Afferents to the cerebellar lateral nucleus. Evidence from retrograde transport of horseradish peroxidase after pressure injections through micropipettes. J Comp Neurol 166:285–301
Flumerfelt BA, Hrycyshyn AW, Kapogianis EM (1982) Spinal projections to the lateral reticular nucleus in the rat. Anat Embryol 165:345–359
Gonatas NK, Harper C, Mizutani T, Gonatas JO (1979) Superior sensitivity of conjugates of horseradish peroxidase with wheat germ agglutinin for studies of retrograde axonal transport. J Histochem Cytochem 27:728–734
Grofová I, Ottersen OP, Rinvik E (1978) Mesencephalic and diencephalic afferents to the superior colliculus and periaqueductal gray substance demonstrated by retrograde axonal transport of horseradish peroxidase in the cat. Brain Res 146:205–220
Haines DE, Dietrichs E, Sowa TE (1984) Hypothalamo-cerebellar and cerebello-hypothalamic pathways: a review and hypothesis concerning cerebellar circuits which may influence autonomic centers and affective behavior. Brain Behav Evol 24:198–220
Hinman A, Carpenter MB (1959) Efferent fiber projections of the red nucleus in the cat. J Comp Neurol 113:61–82
Hrycyshyn AW, Flumerfelt BA (1981) A light microscopic investigation of the afferent connections of the lateral reticular nucleus in the cat. J Comp Neurol 197:447–502
Hrycyshyn AW, Flumerfelt BA, Anderson WA (1982) A horseradish peroxidase study of the projection from the lateral reticular nucleus to the cerebellum in the rat. Anat Embryol 165:1–18
Ito J, Sasa M, Matsuoka I, Takaori S (1982) Afferent projection from reticular nuclei, inferior olive and cerebellum to lateral vestibular nucleus of the cat as demonstrated by horseradish peroxidase. Brain Res 231:427–432
Kawamura K, Brodal A, Hoddevik GH (1974) The projection of the superior colliculus onto the reticular formation of the brain stem. An experimental anatomical study in the cat. Exp Brain Res 19:1–19
Kitai ST, DeFrance JF, Hatada K, Kennedy DT (1974) Electrophysiological properties of lateral reticular nucleus cells. II. Synaptic activation. Exp Brain Res 21:419–432
Künzle H (1973) The topographic oprganization of spinal afferents to the lateral reticular nucleus of the cat. J Comp Neurol 149:103–116
Künzle H (1975) Autoradiographic tracing of the cerebellar projections from the lateral reticular nucleus in the cat. Exp Brain Res 22:255–266
Künzle H, Wiesendanger M (1974) Pyramidal connections to the lateral reticular nucleus in the cat: a degeneration study. Acta Anat (Basel) 88:105–114
Kuypers HGJ (1958a) An anatomical analysis of corticobulbar connexions to the pons and lower brain stem in the cat. J Anat (Lond) 92:198–218
Kuypers HGJ (1958b) Some projections from the pericentral cortex to the pons and lower brain stem in monkey and chimpanzee. J Comp Neurol 111:221–251
Kuypers HGJ (1958c) Corticobulbar connexions to the pons and lower brain stem in man. An anatomical study. Brain 81:364–388
Kuypers HGJ, Maisky VA (1975) Retrograde axonal transport of horseradish peroxidase from spinal cord to brain stem cell groups in the cat. Neurosci Lett 1:9–14
Ladpli R, Brodal A (1968) Experimental studies of commissural and reticular formation projections from the vestibular nuclei in the cat. Brain Res 8:65–96
Maisky VA, Kuypers H (1978) Studies of the supraspinal system neurons in the cat brain by the technique of retrograde axonal transport of horseradish peroxidase. Neirofiziologiia 10:115–124
Mantyh PW (1983) Connections of midbrain periaqueductal gray in the monkey. II. Descending efferent projections. J Neurophysiol 49:582–594
Mantyh PW, Peschanski M (1982) Spinal projections from the periaqueductal grey and dorsal raphe in the rat, cat and monkey. Neuroscience 7:2769–2776
Marchand JE, Hagino N (1983) Afferents to the periaqueductal gray in the rat. A horseradish peroxidase study. Neuroscience 9:95–106
Martin GF, Andrezik J, Crutcher K, Linauts M, Panneton M (1977) The lateral reticular nucleus of the opossum (Didelphis virginiana). II. Connections. J Comp Nerol 174:151–186
Matsushita M, Ikeda M (1976) Projections from the lateral reticular nucleus to the cerebellar cortex and nuclei in the cat. Exp Brain Res 24:403–421
Menétrey D, Roudier F, Besson JM (1983) Spinal neurons reaching the lateral reticular nucleus as studied in the rat by retrograde transport of horseradish peroxidase. J Comp Neurol 220:439–452
Mesulam M-M (1978) Tetramethyl benzidine for horseradish peroxidase neurohistochemistry: a non-carcinogenic blue reaction-product with superior sensitivity for visualizing neural afferents and efferents. J Histochem Cytochem 26:106–117
Mizuno N, Nakamura Y (1973) An electron microscope study of spinal afferents to the lateral reticular nucleus of the medulla oblongata in the cat. Brain Res 53:187–191
Mizuno N, Mochizuki K, Akimoto C, Matsushima R, Nakamura Y (1973) Rubrobulbar projections in the rabbit. A light and electron microscopic study. J Comp Neurol 147:267–280
Morin F, Kennedy DT, Gardner E (1966) Spinal afferents to the lateral reticular nucleus. I. A histological study. J Comp 126:511–522
Payne JN (1983) Axonal branching in the projections from precerebellar nuclei to the lobulus soimplex of the rat's cerebellum investigated by retrograde fluorescent double labeling. J Comp Neurol 213:233–240
Qvist H, Dietrichs E, Røste LS, Walberg F (1983) A projection from the raphe nuclei to the lateral reticular nucleus in the cat. Arch Ital Biol 121:249–257
Qvist H, Dietrichs E, Walberg F (1984) An ipsilateral projection from the red nucleus to the lateral reticular nucleus in the cat. Anat Embryol 170:327–330
Walberg F (1952) The lateral reticular nucleus of the medulla oblongata in mammals. J Comp Neurol 96:283–343
Walberg F (1958a) Descending connectionsto the lateral reticular nucleus. An experimental study in the cat. J Comp Neurol 109:363–389
Walberg F (1958b) On the termination of the rubrobulbar fibers. Experimental observations in the cat. J Comp Neurol 110:65–73
Walberg F, Pompeiano O (1960) Fastigiofugal fibers to the lateral reticular nucleus. An experimental study in the cat. Exp Neurol 2:40–53
Walberg F, Dietrichs E, Nordby T (1985) On the projections from the vestibular and perihypoglossal nuclei to the spinal trigeminal and lateral reticular nuclei in the cat. Brain Res 333:123–130
Watkins LR, Griffin G, Leichnetz GR, Mayer DJ (1981) Identification and somatotopic organization of nuclei projecting via the dorsolateral funiculus in rats: a retrograde tracing study using HRP slow-release gels. Brain Res 223:237–255
Zemlan FB, Kow L-M, Morrell JI, Pfaff DW (1979) Descending tracts of the lateral columns of the rat spinal cord: a study using the horseradish peroxidase and silver impregnation techniques. J Anat (Lond) 128:489–512
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Røste, L.S., Dietrichs, E. & Walberg, F. A projection from the periaqueductal grey to the lateral reticular nucleus in the cat. Anat Embryol 172, 339–343 (1985). https://doi.org/10.1007/BF00318982
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DOI: https://doi.org/10.1007/BF00318982