Cerebral VentriclesInjections, IntraventricularFourth VentricleCisterna MagnaHeart VentriclesShiveringCerebral ArteriesInjectionsBody TemperatureLateral VentriclesBrainCerebrospinal FluidPempidineHypothalamusEpendymaCerebral InfarctionHypnosis, AnestheticBody Temperature RegulationPhysostigmineCerebral Ventricle NeoplasmsHexamethonium CompoundsTranylcypromineCatsThird VentricleSubarachnoid SpaceCerebral PalsyCerebrovascular CirculationConsciousnessHistamine AgentsMiddle Cerebral ArteryPerfusionPyrogensSerotoninHydrocephalusChoroid PlexusNorepinephrineBlood PressureDogsPhentolamineLysergic Acid DiethylamideDrinkingRats, WistarCerebral AngiographyParasympathomimeticsInfarction, Middle Cerebral ArteryInjections, IntravenousMalaria, CerebralRats, Sprague-DawleyTime FactorsReserpineCerebral VeinsPentobarbitalAtropineHeart RateBrain IschemiaFeverCerebral HemorrhageDepression, ChemicalNaloxoneRespirationRats, Inbred StrainsMagnetic Resonance ImagingVentricular FunctionArginine VasopressinSheepDose-Response Relationship, DrugProstaglandinsStimulation, ChemicalNeuronsRabbitsVasopressinsCarbacholElectroencephalographyProstaglandins EMyocardiumEpinephrineHeartCorticotropin-Releasing HormoneBehavior, AnimalMorphineIschemic Attack, TransientAcetylcholineDopamineEatingSympathetic Nervous SystemBlood Flow VelocityAnterior Cerebral ArteryInjections, IntraperitonealCerebral Amyloid AngiopathyBrain DiseasesPosterior Cerebral ArteryAngiotensin IISubarachnoid HemorrhageBrain EdemaCerebral VentriculographyMyocardial ContractionDisease Models, AnimalIntracranial PressureHemodynamicsCerebrovascular Disorders