[Synaptic effects induced in motor neurons by stimulation of individual propriospinal neurons].
In experiments carried out on cats unitary PSPs evoked in lumbar motoneurons by stimulation of single identified ventral horn propriospinal neurons receiving mono- and polysynaptic inputs from reticular nuclei were recorded by means of the averaging computer. The amplitudes of the unitary proprio-motoneuronal EPSPs and IPSPs were 49.6 +/- +/- 6.0 muV and 28.9 +/- 2.9 muV, respectively. A synaptic delay was 0.34 +/- 0.05 ms. An individual propriospinal cell of the upper lumbar segments can establish monosynaptic articulations with several motoneurons of the lower lumbar segments.
D000818:Animals; D002415:Cats; D007395:Interneurons / Q000502:physiology; D008564:Membrane Potentials; D009046:Motor Neurons / Q000502:physiology*; D009434:Neural Pathways; D012154:Reticular Formation / Q000502:physiology; D013116:Spinal Cord / Q000502:physiology*; D013569:Synapses / Q000502:physiology*; D013570:Synaptic Membranes / Q000502:physiology
Sinapticheskie éffekty, vyzyvaemye v motoneĭronakh razdrazheniem odinochnykh propriospinal'nykh neĭronov.