Third VentricleCerebral VentriclesSubarachnoid HemorrhageSubarachnoid SpaceCerebrospinal FluidCerebral Ventricle NeoplasmsInjections, IntraventricularHeart VentriclesFourth VentricleCerebral VentriculographyCerebral HemorrhageHydrocephalusCisterna MagnaEpendymaHemorrhageVasospasm, IntracranialColloid CystsVentriculostomyLateral VentriclesHypothalamusBrainCerebral ArteriesCerebrospinal Fluid ProteinsShiveringCerebral AngiographyBody TemperatureIntracranial AneurysmIntracranial HemorrhagesInjectionsCerebral AqueductChoroid PlexusMagnetic Resonance ImagingTomography, X-Ray ComputedPneumoencephalographyCerebral InfarctionTranylcypromineVentriculoperitoneal ShuntCerebrovascular CirculationNeurosurgical ProceduresAneurysm, RupturedCatsBrain DiseasesDrinkingCraniopharyngiomaTime FactorsNeuroendoscopyCraniotomyBlood PressureDogsPempidineSpinal PunctureHypnosis, AnestheticRats, Sprague-DawleyBody Temperature RegulationPhysostigmineRetinal HemorrhageBasilar ArteryChoroid Plexus NeoplasmsCerebrospinal Fluid ShuntsCerebrospinal Fluid PressureCerebrospinal Fluid RhinorrheaRats, WistarMedian EminenceHexamethonium CompoundsMiddle Cerebral ArterySeptum PellucidumIntracranial PressureBrain IschemiaNorepinephrineConsciousnessPerfusionCerebral PalsyMicrosurgeryMeningitisSerotoninHypothalamus, AnteriorCystsPostpartum HemorrhageArachnoidRats, Inbred StrainsHistamine AgentsPyrogensCerebral VeinsVentricular FunctionTreatment OutcomeInjections, IntravenousVitreous HemorrhageGastrointestinal HemorrhagePreoptic AreaRupture, SpontaneousIschemic Attack, TransientNeuronsHeart RatePhentolamineVasopressinsMyocardiumDose-Response Relationship, DrugHeartLysergic Acid DiethylamideEye Hemorrhage