Medulla OblongataPiloerectionBrain StemLateral Medullary SyndromeThermoreceptorsForamen MagnumKidney MedullaProlactin-Releasing HormoneReticulumSpinal CordBrainAutonomic PathwaysSolitary NucleusHypothalamusMagnetic Resonance ImagingRespirationReticular FormationCerebellumCatsChemoreceptor CellsVagus NerveNeuronsSudden Infant DeathRats, Sprague-DawleyRats, Inbred StrainsGerminomaPressoreceptorsScrapieBrain ChemistryProto-Oncogene Proteins c-fosCatecholaminesBlood PressureImmunohistochemistryNeural PathwaysPonsNorepinephrineAneurysm, RupturedSympathetic Nervous SystemRats, Wistar