[Functional organization of the reticulo- and vestibulospinal synaptic projections of the lumbar motor neurons in rats].
Synaptic events evoked by in lumbar motoneurons ally antidromic by stimulation of identified reticulo- and vestibulo-spinal neurons were studied in the rat. Monosynaptic actions produced by fast-conducting reticulo-spinal fibers were found in different hind-limb motoneurons innervating proximal and distal flexor and extensor muscles. Vestibulo-spinal projections contained relatively few fast-conducting fibers and produced mainly polysynaptic actions in hind-limb motoneurons. The convergence of reticulo- and vestibulo-spinal synaptic influences in different motoneurons was demonstrated.
D000818:Animals; D004594:Electrophysiology; D008564:Membrane Potentials; D009046:Motor Neurons / Q000502:physiology*; D009433:Neural Inhibition; D051381:Rats; D012154:Reticular Formation / Q000502:physiology*; D013116:Spinal Cord / Q000502:physiology*; D013570:Synaptic Membranes / Q000502:physiology; D014726:Vestibular Nuclei / Q000502:physiology*
Funktsional'naia organizatsiia retikulo- i vestibulo-spinal'nykh sinapticheskikh proektsiĭ na poiasnichnye motoneĭrony krysy.