PropofolAnesthetics, IntravenousCraniotomyAnesthetics, GeneralAnesthetics, InhalationMethyl EthersAnestheticsReceptors, GABA-AAnesthetics, LocalIsofluraneAnesthetics, CombinedAnesthesia, GeneralHalothaneAnesthesiaHypnotics and SedativesNeurosurgical ProceduresConscious SedationPneumocephalusThiopentalEnfluraneLidocaineAnesthetics, DissociativeMonitoring, IntraoperativeAnesthesia Recovery PeriodFentanylFrontal BoneConsciousness MonitorsAnesthesia, LocalEtomidateHematoma, Subdural, AcuteNitrous OxideKetamineAnesthesia, InhalationTrephiningBupivacaineMethoxyfluraneDelayed Emergence from AnesthesiaHead Injuries, PenetratingBrain NeoplasmsAnesthesia, DentalSupratentorial NeoplasmsDura MaterHematoma, SubduralMidazolamIntracranial AneurysmSurgical Fixation DevicesMeningeal NeoplasmsElectroencephalographyAlfentanilFrontal SinusBenzocaineMeningiomaPentobarbitalArachnoid CystsMicrosurgeryDose-Response Relationship, DrugAdjuvants, AnesthesiaDeep SedationSubdural SpaceTetracaineNerve BlockPostoperative Complications