Spinal projections from the mesencephalic and pontine reticular formation in the North American Opossum: a study using axonal transport techniques

The Journal of Comparative Neurology
G F MartinI Tschismadia

Abstract

The results from several experimental approaches lead to the following conclusions. The nucleus cuneiformis projects to at least lumbar levels of the spinal cord. Its axons course through the ipsilateral sulcomarginal and ventral funiculi to distribute within lamina VIII and adjacent portions of lamina VII. Neurons within the nucleus reticularis pontis (RP), particularly within more medial parts of the nucleus, project through comparable routes to the same laminae. In addition, however, neurons within the lateral and dorsolateral RP relay through the lateral and dorsolateral funiculi, ipsilaterally, and the dorsolateral funiculus, contralaterally. Axons could be traced from the dorsolateral tracts to laminae IV through VII, lamina X and, in some instances, to laminae I and II. Injections of the dorsolateral pons also label the intermediolateral cell column and an area presumed to be the sacral parasympathetic nucleus. Many of the neurons which contribute to the contralateral bundle are located adjacent to the ventral nucleus of the lateral lemniscus. The nucleus reticularis gigantocellularis projects mainly via the sulcomarginal, ventral and lateral funiculi to laminae VIII and adjacent portions of lamina VII. The nucleus retic...Continue Reading

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Citations

Jan 1, 1983·Anatomy and Embryology·H J ten DonkelaarR de Boer-van Huizen
Jan 1, 1983·Journal of Neural Transmission·P N LeighC D Marsden
Jan 1, 1982·Pharmacology & Therapeutics·K Brück, P Hinckel
Apr 1, 1988·Behavioural Brain Research·G F MartinJ C Hazlett
Dec 1, 1987·Neuroscience·J C Holstege, H G Kuypers
Oct 1, 1996·Progress in Neurobiology·A K MoschovakisS M Highstein
Sep 25, 2015·The Journal of Comparative Neurology·Magne S SivertsenJoel C Glover
Dec 1, 1991·The Anatomical Record·X M Xu, G F Martin
Jul 22, 1988·The Journal of Comparative Neurology·D M Webster, J D Steeves
Oct 29, 2005·The Journal of Comparative Neurology·Mitsuyoshi Sasaki
Feb 6, 1986·Nature·H M SakaiJ E Dowling
Mar 10, 1981·The Journal of Comparative Neurology·G F MartinW M Panneton

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