A light microscopic investigation of the afferent connections of the lateral reticular nucleus in the cat

The Journal of Comparative Neurology
A W Hrycyshyn, B A Flumerfelt

Abstract

The topographical organization of the projections to the lateral reticular nucleus (LRN) of the cat was investigated using the horseradish peroxidase (HRP), silver-impregnation and autoradiographic tracing methods. Following injection of HRP into the LRN, labelled cells were found mainly within Rexed's laminae VII and VIII of the spinal cord, the contralateral red nucleus, the ventro-rostral aspect of the contralateral fastigial nucleus and the contralateral anterior sigmoid and coronal gyri of the cerebral cortex. Animals with injections of tritiated amino acids placed within the pericruciate cortex, red nucleus or fastigial nucleus were processed for autoradiography. In a corresponding series of animals, electrolytic lesions were placed selectively into the above sources of reticular afferents, and terminal degeneration within the LRN was studied by light microscopy. An extensive input from the spinal cord was found to terminate predominantly on the ipsilateral side throughout the rostrocaudal extent of the LRN, except for a small ventromedial area of the rostral parvocellular division and a small rostromedial area of the magnocellular division. The cortical projection terminated diffusely within the middle one-half of the co...Continue Reading

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Citations

Dec 1, 1982·Anatomy and Embryology·B A FlumerfeltE M Kapogianis
Aug 1, 1983·Journal of the Autonomic Nervous System·J Perrin, J Crousillat
Dec 1, 1990·Brain Research Bulletin·A Gonzalo-Ruiz, G R Leichnetz
Dec 19, 2000·Journal of Chemical Neuroanatomy·F O EstevesT F Batten
Dec 1, 1988·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·L JunckR D Hichwa
Jan 5, 2002·The Journal of Comparative Neurology·Deborah M Antonino-GreenDavid S K Magnuson
Jun 15, 1986·The Journal of Comparative Neurology·M T ShokunbiB A Flumerfelt
Mar 6, 2003·The Journal of Comparative Neurology·David AndrewA D Bud Craig
Feb 22, 1987·The Journal of Comparative Neurology·R Wiesendanger, M Wiesendanger
Apr 15, 1987·The Journal of Comparative Neurology·H GhaziB A Flumerfelt
Apr 10, 1981·The Journal of Comparative Neurology·A W Hrycyshyn, B A Flumerfelt
Apr 10, 1981·The Journal of Comparative Neurology·A W Hrycyshyn, B A Flumerfelt

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