Cholinergic AntagonistsScopolamine HydrobromideMuscarinic AntagonistsParasympathomimeticsAtropineMecamylamineCholinergic AgonistsParasympatholyticsQuinuclidinyl BenzilateReceptors, CholinergicCarbacholAcetylcholineReceptors, MuscarinicDose-Response Relationship, DrugAction PotentialsHormone AntagonistsDopamine AntagonistsExcitatory Amino Acid AntagonistsNeurokinin-1 Receptor AntagonistsNarcotic AntagonistsHistamine H2 AntagonistsInterleukin 1 Receptor Antagonist ProteinGABA AntagonistsHistamine H1 AntagonistsPurinergic P1 Receptor AntagonistsPiperidinesRats, Sprague-DawleyHistamine AntagonistsNicotinic AntagonistsAdenosine A2 Receptor AntagonistsAdrenergic alpha-1 Receptor AntagonistsPurinergic P2 Receptor AntagonistsSerotonin 5-HT3 Receptor AntagonistsSerotonin 5-HT2 Receptor AntagonistsAdenosine A1 Receptor AntagonistsLeukotriene AntagonistsAngiotensin Receptor AntagonistsRats, WistarAdrenergic alpha-2 Receptor AntagonistsAdrenergic AntagonistsGABA-A Receptor AntagonistsAdrenergic alpha-AntagonistsHistamine H3 AntagonistsRadioligand AssayReceptors, SerotoninReceptors, EndothelinAdrenergic beta-2 Receptor AntagonistsReceptors, N-Methyl-D-AspartateBinding, CompetitiveSerotonin 5-HT1 Receptor AntagonistsCalcium Channel BlockersDizocilpine MaleateGuinea PigsPyridinesAdenosine A3 Receptor AntagonistsReceptor, Endothelin ABenzazepinesBiphenyl CompoundsEstrogen AntagonistsNaltrexoneDrug InteractionsPiperazinesSulfonamidesCells, CulturedNaloxoneSerotonin Receptor Agonists