UnconsciousnessConsciousnessConsciousness DisordersPropofolAnesthetics, IntravenousDelayed Emergence from AnesthesiaElectroencephalographyAnesthesia, GeneralAnesthesiaMonitoring, IntraoperativeHypnotics and SedativesPhysostigmineMethyl EthersAnesthetics, InhalationEvoked Potentials, AuditoryPersistent Vegetative StateAnestheticsCraniocerebral TraumaWakefulnessElectrooculographyEntropyIsofluraneComaBrainMagnetic Resonance ImagingCholinesterase Inhibitors