MecamylamineNicotinic AntagonistsNicotineReceptors, NicotinicNicotinic AgonistsDihydro-beta-ErythroidineChlorisondamineGanglionic BlockersAzocinesNeuronsDimethylphenylpiperazinium IodideCholinergic AntagonistsPempidineHexamethonium CompoundsAconitineQuinolizinesGanglionic StimulantsAcetylcholineScopolamine HydrobromideRats, Sprague-DawleyCholinergic AgentsMuscarinic AntagonistsPentolinium TartrateDose-Response Relationship, DrugAtropineHexamethoniumalpha7 Nicotinic Acetylcholine ReceptorBrainHippocampusBicyclo Compounds, HeterocyclicPhysostigmineSubstance Withdrawal SyndromeDecamethonium CompoundsTubocurarineBungarotoxinsNeuronal PlasticityPharmacologyElectrophysiologyParasympathomimeticsDopamineCells, CulturedNerve Tissue ProteinsBehavior, AnimalRats, WistarSynaptic TransmissionTobacco Use DisorderAction PotentialsCholinergic AgonistsNeostigmineMuscarinic AgonistsCholinergic FibersReceptors, MuscarinicReceptors, CholinergicElectric StimulationNitric Oxide Synthase Type IStereoisomerismCarotid BodyCerebral CortexMice, Inbred C57BLSelf StimulationOxotremorineMethyltyrosinesBenzazepinesChemoreceptor CellsAlkaloids