CraniotomyElectrodesPostoperative ComplicationsPain, PostoperativeTreatment OutcomePostoperative PeriodElectrodes, ImplantedRetrospective StudiesFollow-Up StudiesProspective StudiesNeurosurgical ProceduresPneumocephalusIon-Selective ElectrodesFrontal BoneHematoma, Subdural, AcuteTrephiningElectrochemistryPost and Core TechniqueSubdural SpaceHead Injuries, PenetratingBrain NeoplasmsDura MaterHematoma, SubduralIntracranial AneurysmDelayed Emergence from AnesthesiaTomography, X-Ray ComputedElectrochemical TechniquesMicrosurgeryMeningeal NeoplasmsSurgical Fixation DevicesSupratentorial NeoplasmsFrontal SinusMeningiomaStereotaxic TechniquesArachnoid CystsTemporal BoneOperative TimeMagnetic Resonance ImagingGlasgow Coma ScaleMicroelectrodesTime FactorsSurgical InstrumentsHematoma, Subdural, ChronicHematoma, Epidural, CranialCerebrospinal Fluid RhinorrheaNeurosurgeryCranial Fossa, AnteriorFourth VentriclePotentiometrySurgical FlapsEquipment DesignBrain AbscessFluorocarbon PolymersHematoceleMonitoring, IntraoperativeSkull BaseGraphiteVentriculostomyBiosensing TechniquesCerebellar DiseasesDecompression, SurgicalBrain InjuriesSkull FracturesElectroencephalographyAneurysm, RupturedSkull Base NeoplasmsConsciousness MonitorsCerebral AngiographyCranial Nerve NeoplasmsElectric StimulationSubarachnoid HemorrhageConscious SedationLaparoscopyIntraoperative ComplicationsCerebral VeinsGoldNeuroendoscopyAnesthesiaSurgical Procedures, OperativeCraniopharyngiomaReoperationBrain DiseasesSkullIntracranial HemorrhagesConductometryNeuronavigationOrbitPreoperative CareCochlear ImplantsCranial Fossa, MiddleElectric ImpedanceCochlear ImplantationAnesthesia, GeneralSurgical Procedures, Minimally InvasiveAnterior Cerebral ArteryEnzymes, ImmobilizedBrainIntraoperative CareIntracranial Hemorrhage, HypertensiveEpilepsy