DeliriumDementiaCognition DisordersAmnesiaHistamine H3 AntagonistsReceptors, Histamine H3Neuropsychological TestsMild Cognitive ImpairmentAlzheimer DiseaseDementia, VascularNootropic AgentsCognitionMemory DisordersBrainHistamine AntagonistsDelirium, Dementia, Amnestic, Cognitive DisordersMemoryNervous System DiseasesAlcohol Withdrawal DeliriumAgingMaze LearningDrug DiscoveryHippocampusAtrophyLearningBipolar DisorderPsychiatric Status Rating ScalesMental DisordersDementia, Multi-InfarctMagnetic Resonance ImagingMood DisordersMotor ActivityGeriatric AssessmentLewy Body DiseaseAnxiety DisordersApolipoprotein E4AIDS Dementia ComplexNeuronsPsychomotor AgitationDiagnostic and Statistical Manual of Mental DisordersSeverity of Illness IndexConfusionMental Status ScheduleRisk FactorsDisease ProgressionWord Association TestsProspective StudiesLongitudinal StudiesHypnotics and SedativesExecutive FunctionCohort StudiesIntensive Care UnitsAphasia, Primary ProgressiveTemporal LobeMental RecallCaregiversDepressive Disorder, Majortau ProteinsCholinesterase InhibitorsDepressive DisorderImage Processing, Computer-AssistedNursing HomesTrail Making TestHypnosis, AnestheticBrain MappingFollow-Up StudiesActivities of Daily LivingCase-Control StudiesAmnesia, AnterogradeAttention Deficit Disorder with HyperactivityAmyloid beta-PeptidesHaloperidolInstitutionalizationIndansAntipsychotic AgentsMemory, EpisodicPredictive Value of TestsNursing DiagnosisVerbal LearningReproducibility of ResultsNursing AssessmentAnalysis of VarianceCritical IllnessPsychotic DisordersBenzodiazepinesObsessive-Compulsive DisorderStress Disorders, Post-TraumaticPrevalenceAutistic DisorderAge FactorsTime FactorsPostoperative ComplicationsComorbidityPsychoses, AlcoholicHomes for the AgedPhobic DisordersSubstance-Related DisordersChild Development Disorders, PervasiveParkinson DiseaseAlcohol Amnestic Disorder