SeizuresPicrotoxinGABA AntagonistsStrychninegamma-Aminobutyric AcidBicucullineReceptors, GABA-AGABA-A Receptor AntagonistsMuscimolReceptors, GABAConvulsantsAminobutyratesPentobarbitalReceptors, GlycinePentylenetetrazoleGABA AgonistsBaclofenNeural InhibitionNikethamideEvoked PotentialsGlycineDiazepamCrotonatesChloridesMamillary BodiesGABA ModulatorsIontophoresisNeuronsGABA-B Receptor AntagonistsAction PotentialsBarbituratesGABA-A Receptor AgonistsSynaptic TransmissionMembrane Potentials