[Effect of intracellular injections of chloride ion on the inhibitory postsynaptic potential and post-burst hyperpolarization of sensomotor cortex neurons in the cat].
Inversion of the early component of IPSPs in pyramidal neurons of the sensorimotor cortex by intracellular injection of chloride ions was demonstrated in cats immobilized by myorelaxants in acute experiments under moderate composed anesthesia (40 mg/kg nembutal and 20 mg/kg chloralose intraperitoneally). The late component of IPSPs as well as the post-burst hyperpolarization in pyramidal neurons were not inverted. It is concluded that during the early component of IPSPs of both pyramidal and nonpyramidal neurons the membrane permeability is increased for chloride ions, while both the late component of IPSPs and the post-burst hyperpolarization in pyramidal neurons are less dependent on the chloride permeability.
D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002415:Cats; D002712:Chlorides / Q000494:pharmacology*; D008564:Membrane Potentials / Q000187:drug effects; D009044:Motor Cortex / Q000187:drug effects*; D009433:Neural Inhibition / Q000187:drug effects; D013003:Somatosensory Cortex / Q000187:drug effects*; D009435:Synaptic Transmission / Q000187:drug effects
D002712:Chlorides
Vliianie vnutrikletochnoĭ in"ektsii ionov khlora na tormoziashchiĭ postsinapticheskiĭ potentsial i postzalpovuiu giperpoliarizatsiiu neĭronov sensomotornoĭ kory koshki.