Medulla OblongataPiloerectionBrain StemLateral Medullary SyndromeThermoreceptorsForamen MagnumCell NucleusKidney MedullaProlactin-Releasing HormoneSolitary NucleusSpinal CordReticulumBrainAutonomic PathwaysHypothalamusRespirationReticular FormationNeuronsCatsCerebellumVagus NerveChemoreceptor CellsMagnetic Resonance ImagingRats, Sprague-DawleyRats, Inbred StrainsSudden Infant DeathGerminomaProto-Oncogene Proteins c-fosPressoreceptorsBrain ChemistryScrapieCatecholaminesImmunohistochemistryPonsBlood PressureNeural PathwaysNorepinephrineAneurysm, RupturedRats, WistarSympathetic Nervous SystemSerotoninRats, Inbred WKYCentral Nervous SystemNucleus AccumbensCarbon DioxideHeart RateRats, Inbred SHRSheepTissue DistributionBrain NeoplasmsRNA, MessengerTime FactorsThalamic NucleiRaphe NucleiCochlear NucleusParaventricular Hypothalamic NucleusArcuate Nucleus