Receptors, NicotinicReceptors, CholinergicNicotinic AgonistsNicotineNicotinic AntagonistsCholinergic AgentsMecamylamineHair Cells, Auditory, Inneralpha7 Nicotinic Acetylcholine ReceptorAcetylcholineReceptors, MuscarinicProtein SubunitsQuinuclidinyl BenzilateRats, Sprague-DawleyMuscarinic AntagonistsDose-Response Relationship, DrugCarbacholScopolamine HydrobromideParasympathomimeticsCholinergic AgonistsN-MethylscopolamineAtropineCholinergic AntagonistsDexetimideMuscarinic AgonistsReceptor, Muscarinic M1ParasympatholyticsReceptor, Muscarinic M3Scopolamine DerivativesPirenzepinePropylbenzilylcholine MustardCholinesterase InhibitorsArecolineOxotremorineQuinuclidinesCholinergic FibersReceptor, Muscarinic M2BenzilatesPhysostigmineDecamethonium CompoundsReceptor, Muscarinic M4BungarotoxinsHexamethonium CompoundsTubocurarineTetraisopropylpyrophosphamideAtropine DerivativesButoxamineElectric OrganParasympathetic Nervous SystemGlycopyrrolateHexamethoniumMuscarineAcetylcholinesteraseParathionBinding, CompetitiveReceptors, AdrenergicCholine O-AcetyltransferaseReceptor, Muscarinic M5AutoradiographyReceptors, Adrenergic, betaCholinergic NeuronsReceptors, Adrenergic, alphaPilocarpineNeostigmineTritiumCalciumBrainAconitineKineticsGalantamineHair Cells, Auditory, OuterPhosphatidylinositolsHemicholinium 3CatecholaminesTropanesMethacholine CompoundsHippocampusDenervationAmylasesGuinea PigsIontophoresisRats, Inbred StrainsPonsNeuronsMembrane PotentialsAdrenal MedullaGTP-Binding ProteinsSynaptic TransmissionVirulence Factors, BordetellaMaze LearningPertussis ToxinSynapsesParotid GlandAction PotentialsCochleaStrychnineElectric StimulationTorpedoMemoryRadioligand Assay