[Analysis of the components of synaptic potentials induced by corticofugal spikes in the rubrospinal neurons of the cat].
EPSPs of rubrospinal neurons evoked by stimulation of the sensorimotor cortex were studied in nembutalized cats by means of intracellular recordings. Participation of the corticospinal input in the genesis of EPSPs mentioned was revealed by selective activation of corticospinal fibres on the level of medullary pyramids as well as by studying peculiarities of their interaction with the effects of cortical stimulation. It was shown that both predominantly slow conducting corticospinal and corticorubral neurons participate in the genesis of the first two components of the complex EPSPs. Problems of cellular composition and mechanisms of corticofugal influences on the red nucleus neurons are discussed.
D000818:Animals; D002415:Cats; D004525:Efferent Pathways / Q000502:physiology; D005071:Evoked Potentials; D009044:Motor Cortex / Q000502:physiology*; D012012:Red Nucleus / Q000502:physiology*; D013003:Somatosensory Cortex / Q000502:physiology*; D013116:Spinal Cord / Q000502:physiology*; D013569:Synapses / Q000502:physiology; D009435:Synaptic Transmission
Analiz komponentov sinapticheskikh potentsialov, vyzvannykh kortikofugal'noĭ, impul'satsieĭ, v rubrospinal'nykh neĭronakh koshki.