MuscimolGABA AgonistsGABA-A Receptor AgonistsReceptors, GABA-ABaclofenGABA Antagonistsgamma-Aminobutyric AcidBicucullineMicroinjectionsGABA-A Receptor AntagonistsRats, Sprague-DawleyGABA-B Receptor AgonistsPicrotoxinReceptors, GABA-BIsoxazolesNipecotic AcidsDopamine AgonistsPurinergic P1 Receptor AgonistsReceptors, GABANeuronsDose-Response Relationship, DrugGABA-B Receptor AntagonistsGABA AgentsSerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsGABA ModulatorsSerotonin Receptor AgonistsAdenosine A1 Receptor AgonistsBehavior, AnimalRats, WistarAmygdalaNeural InhibitionPonsMedulla OblongataNucleus AccumbensElectric StimulationAdrenergic alpha-2 Receptor AgonistsPurinergic P2 Receptor AgonistsCannabinoid Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsMuscarinic AgonistsSynaptic TransmissionGABA Plasma Membrane Transport ProteinsHippocampusHistamine AgonistsConditioning, OperantNicotinic AgonistsReceptors, Opioid, kappaAdenosine A2 Receptor AgonistsAdrenergic AgonistsAdenosine A3 Receptor AgonistsAction PotentialsReceptors, Opioid, mu