HypercapniaCarbon DioxideCerebral ArteriesCerebrovascular CirculationCerebral InfarctionMiddle Cerebral ArteryCerebral PalsyAnoxiaChemoreceptor CellsRespirationHypocapniaAcidosis, RespiratoryBrainOxygenPartial PressurePulmonary VentilationCerebral AngiographyInfarction, Middle Cerebral ArteryCerebral VeinsMalaria, CerebralBrain IschemiaRespiratory MechanicsBlood Gas AnalysisPia MaterCerebral HemorrhageAcidosisApneaBlood Flow VelocityTidal VolumeAcid-Base EquilibriumCarotid BodyHyperventilationHyperoxiaIschemic Attack, TransientMagnetic Resonance ImagingBlood PressureAcetazolamideRats, Sprague-DawleyIntracranial PressureHydrogen-Ion ConcentrationAsphyxiaOxygen ConsumptionRegional Blood FlowAnterior Cerebral ArteryTime FactorsCerebral Amyloid AngiopathyCerebrovascular DisordersPosterior Cerebral ArteryAnimals, NewbornHypoventilationCerebral VentriclesBlood Circulation TimeCatsBrain EdemaHypoxia, BrainArteriolesSubarachnoid HemorrhagePlethysmography, Whole BodyOximetryPhrenic NerveDiaphragmBrain StemRespiration, ArtificialXenon RadioisotopesHeart RateIntracranial Embolism and ThrombosisRespiratory Physiological PhenomenaLaser-Doppler FlowmetryHemodynamicsMedulla OblongataRats, WistarDisease Models, AnimalRespiratory InsufficiencyCarbonic Anhydrase InhibitorsBlood VolumeRespiratory MusclesBrain DiseasesIntercostal MusclesSpectroscopy, Near-InfraredDominance, CerebralBicarbonatesDogsNeuronsIntracranial AneurysmRespiratory CenterWakefulnessInsufflationCerebral RevascularizationHypotensionVasomotor SystemTomography, Emission-ComputedCerebrumPulmonary Gas ExchangeVasospasm, IntracranialVascular ResistanceBlood-Brain BarrierDoxapramVasoconstrictionSodium CyanideHomeostasis