MuscimolGABA AgonistsProdrugsGABA-A Receptor AgonistsReceptors, GABA-ABicucullinegamma-Aminobutyric AcidGABA AntagonistsBaclofenMicroinjectionsReceptors, GABACerebellar NucleiFlunitrazepamPicrotoxinGABA-A Receptor AntagonistsReceptors, GABA-BOxazolesNipecotic AcidsRats, Sprague-Dawleygamma-Glutamyl HydrolaseMedulla OblongataGABA AgentsPonsGABA-B Receptor AgonistsRats, Long-EvansSecobarbitalIsoxazolesPentobarbitalFlucytosineAziridinesDiazepamNitrogen Mustard CompoundsChlormethiazoleDose-Response Relationship, Drug