title: Presynaptic inhibition: transmitter and ionic mechanisms.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001369:Axons / Q000502:physiology; D004553:Electric Conductivity; D007448:Invertebrates; D018377:Neurotransmitter Agents / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology; D011956:Receptors, Cell Surface / Q000502:physiology; D011963:Receptors, GABA-A; D013116:Spinal Cord / Q000502:physiology; D013569:Synapses / Q000187:drug effects / Q000502:physiology*; D014714:Vertebrates; D005680:gamma-Aminobutyric Acid / Q000502:physiology
chemical_list: D018377:Neurotransmitter Agents; D011956:Receptors, Cell Surface; D011963:Receptors, GABA-A; D005680:gamma-Aminobutyric Acid; D011188:Potassium