The organization of olivo-cerebellar projections in the opossum, Didelphis virginiana, as revealed by the retrograde transport of horseradish peroxidase

The Journal of Comparative Neurology
M Linauts, G F Martin

Abstract

The retrograde transport of horseradish peroxidase was utilized to map olivo-cerebellar projections in the Virginia opossum. The spinal cerebellum (anterior lobe, paramedian lobule and pyramis) receives input from several separate regions in the dorsal accessory nucleus, the medial accessory nucleus and portions of the principal nucleus. Evidence is present for a topographical organization whereby specific regions of the olive project to restricted longitudinal zones. The visual-auditory region of the posterior vermis receives input from small areas within the caudal part of the medial accessory nucleus. From a distinctly separate region of the caudal medial accessory nucleus (as well as the principal nucleus), axons project to the uvula. The vestibulo-cerebellum is the recipient of axons from the cap of Kooy and from two spatially separate regions of the medial accessory nucleus. The cerebellar hemisphere (Crus I and II, lobus simplex) is the target of axons from parts of all three olivary nuclei and it is possible that the projections from the different nuclei are targeted upon separate zones. The paraflocculus was found to receive an input from the rostral part of the medial accessory nucleus and from the principal nucleus. ...Continue Reading

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Citations

Jan 1, 1993·Progress in Neurobiology·C Buisseret-Delmas, P Angaut
Oct 1, 1992·Progress in Neurobiology·J S KingG A Bishop
Jul 22, 2008·Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft·Leszek ZguczyńskiBarbara Mierzejewska-Krzyzowska
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Aug 15, 1990·The Journal of Comparative Neurology·J S King, G A Bishop
Oct 22, 1988·The Journal of Comparative Neurology·J J WalkerJ S King

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