[Effect of magnesium ions on presynaptic inhibition of monosynaptic reflexes].
In experiments on spinal narcotized cats perfusion of lumbosacral spinal cord through central canal with artificial cerebrospinal fluid containing high concentration (20-46 mM) of magnesium ions led to reversible depression of negative DRP as well as to depression of prolonged "presynaptic" inhibition of extensor monosynaptic reflexes produced by repetitive impulse volleys in group I flexor muscle afferents. Magnesium did not cause a depression of monosynaptic reflex discharges in spinal ventral roots.
D000818:Animals; D002415:Cats; D008274:Magnesium / Q000494:pharmacology*; D009433:Neural Inhibition / Q000187:drug effects; D012023:Reflex, Monosynaptic / Q000187:drug effects*; D009435:Synaptic Transmission / Q000187:drug effects*
D008274:Magnesium
Deĭstvie ionov magniia na presinapticheskoe tormozhenie monosinapticheskikh refleksov.