Reticular FormationLymph NodesConnective Tissue CellsReticulinDendritic Cells, FollicularLymphatic SystemStromal CellsLymphoid TissueSpleenFibroblastsHistocytochemistryBone MarrowThymus GlandBone Marrow CellsThalamic NucleiIntralaminar Thalamic NucleiReticulumMicroscopy, ElectronLymphocytesPonsMice, Inbred C57BLImmunohistochemistryT-LymphocytesStomach, RuminantThalamusMedulla OblongataRetinal DrusenBrain StemCatsNeuronsOmasumLichen Planus, OralLateral Thalamic NucleiNeural PathwaysMesencephalonNeuronal Tract-TracersVentral Thalamic NucleiElectric StimulationPedunculopontine Tegmental NucleusWheat Germ Agglutinin-Horseradish Peroxidase ConjugateEfferent PathwaysGeographic AtrophyPhotomicrographyElectroencephalographySleep, REMStilbamidinesNeural InhibitionCerebral DecorticationAfferent PathwaysAction PotentialsRats, Sprague-DawleyEpilepsy, AbsenceDecerebrate StateMidline Thalamic NucleiOptic Disk DrusenClonazepamWakefulnessNeurons, EfferentConsummatory Behaviorgamma-Aminobutyric AcidTegmentum MesencephaliHorseradish PeroxidaseSpinal CordMyoclonusLaryngeal NervesMucinosesSubthalamusMicroinjectionsMuscimolMediodorsal Thalamic NucleusElectromyographyCalcium Channels, T-TypeVestibular NucleiOphthalmoscopyAbomasumReceptors, GABA-ASleepCerebral CortexStomatognathic SystemAxonal TransportEndoplasmic ReticulumOculomotor NerveReceptors, N-AcetylglucosamineSynapsesCholinergic AgonistsAbducens NerveSynaptic TransmissionThiamylalVibrissaePeriodicityGABA AgonistsHyalinElectrophysiologyEvoked PotentialsGABA AntagonistsTrigeminal NucleiRaphe NucleiBasilar MembraneNissl BodiesSuperior Colliculi