Receptors, NicotinicNicotinic Antagonistsalpha7 Nicotinic Acetylcholine ReceptorNicotinic AgonistsNicotineAconitineBungarotoxinsDihydro-beta-ErythroidineAzocinesDimethylphenylpiperazinium IodideBicyclo Compounds, HeterocyclicQuinolizinesMecamylamineAcetylcholineHexamethoniumCholinergic AgentsGanglionic StimulantsAnabasineConotoxinsGalantaminePyridinesNeuronsGanglia, ParasympatheticPicolinesAlkaloidsBenzylidene CompoundsLobelineCholinesterase InhibitorsTubocurarineReceptors, CholinergicIbogaineMuscarinic AntagonistsProtein SubunitsPyrantelHexamethonium CompoundsAtropineAzetidinesDose-Response Relationship, DrugPatch-Clamp TechniquesHabenulaReceptors, MuscarinicXenopus laevisParasympathomimeticsDopamineTorpedoChlorisondamineRats, Sprague-DawleyTobacco Use DisorderTacrineCholineSynaptic TransmissionSynaptosomesCholinergic AgonistsOocytesChromaffin CellsRadioligand AssayEpilepsy, Frontal LobeDextrorphanMembrane PotentialsMorantelLevamisoleCorpus StriatumCarbacholReptilian ProteinsMuscarinic AgonistsElectrophysiologyCholinergic FibersMollusk VenomsIon Channel GatingNeostigmineXenopusMuscarineBungarusQuinoxalinesBinding, CompetitiveCholinergic AntagonistsAdrenal MedullaDrug Partial AgonismGanglionic BlockersElectric StimulationHippocampusOxotremorineSnake VenomsParasympathetic Nervous SystemTectum MesencephaliAutoradiographyReceptors, Serotonin, 5-HT3Nootropic AgentsBrainNeurotoxinsSaimiriInterneuronsCalciumCobra Neurotoxin ProteinsBinding SitesObidoxime ChlorideKynurenic AcidReceptors, PresynapticSuperior Cervical GanglionCatecholamines