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Distribution and peculiarities of axon collateral branching of rubro-spinal neurones in brainstem structures.

Abstract

Peculiarities of axon branching and distribution of rubro-spinal neurones in various brainstem structures were studied in acute cats using the technique of intracellular recording of antidromic action potentials as well as collision testing. Axon collaterals of rubro-spinal neurones into the main sensory trigeminal nucleus, facial nerve nucleus, descending (inferior) vestibular nucleus, lateral reticular nucleus, external cuneate nucleus, gracile and main cuneate nuclei were identified. Correlation between the antidromic impulse conduction time along the stem axon before and after collateral branching and the time of impulse conduction in the collaterals themselves was analysed. The number of axon collaterals of individual rubro-spinal neurones to particular brainstem structures was studied. A tendency was observed for the synchronous arrival of rubro-spinal impulses to various brainstem centres, due to an increase in conductance velocity the further away these centres were from the red nucleus.

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  • Publisher Full Text
  • Authors

    ,

    Source

    Neuroscience 12:3 1984 Jul pg 803-15

    MeSH

    Animals
    Axons
    Brain Stem
    Cats
    Evoked Potentials
    Feedback
    Neural Pathways
    Reaction Time
    Red Nucleus
    Spinal Cord

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    6472622

    Citation

    TY - JOUR T1 - Distribution and peculiarities of axon collateral branching of rubro-spinal neurones in brainstem structures. AU - Sarkissian,J S, AU - Fanardjian,V V, PY - 1984/7/1/pubmed PY - 1984/7/1/medline PY - 1984/7/1/entrez SP - 803 EP - 15 JF - Neuroscience JO - Neuroscience VL - 12 IS - 3 N2 - Peculiarities of axon branching and distribution of rubro-spinal neurones in various brainstem structures were studied in acute cats using the technique of intracellular recording of antidromic action potentials as well as collision testing. Axon collaterals of rubro-spinal neurones into the main sensory trigeminal nucleus, facial nerve nucleus, descending (inferior) vestibular nucleus, lateral reticular nucleus, external cuneate nucleus, gracile and main cuneate nuclei were identified. Correlation between the antidromic impulse conduction time along the stem axon before and after collateral branching and the time of impulse conduction in the collaterals themselves was analysed. The number of axon collaterals of individual rubro-spinal neurones to particular brainstem structures was studied. A tendency was observed for the synchronous arrival of rubro-spinal impulses to various brainstem centres, due to an increase in conductance velocity the further away these centres were from the red nucleus. SN - 0306-4522 UR - https://www.unboundmedicine.com/medline/citation/6472622/Distribution_and_peculiarities_of_axon_collateral_branching_of_rubro_spinal_neurones_in_brainstem_structures_ L2 - http://linkinghub.elsevier.com/retrieve/pii/0306-4522(84)90172-6 ER -