DeliriumDementiaCognition DisordersAmnesiaHistamine H3 AntagonistsReceptors, Histamine H3Neuropsychological TestsMild Cognitive ImpairmentAlzheimer DiseaseDementia, VascularNootropic AgentsCognitionMemory DisordersBrainHistamine AntagonistsDelirium, Dementia, Amnestic, Cognitive DisordersMemoryNervous System DiseasesAlcohol Withdrawal DeliriumAgingMaze LearningDrug DiscoveryHippocampusAtrophyBipolar DisorderLearningPsychiatric Status Rating ScalesMental DisordersDementia, Multi-InfarctMagnetic Resonance ImagingMood DisordersMotor ActivityGeriatric AssessmentAnxiety DisordersLewy Body DiseaseApolipoprotein E4AIDS Dementia ComplexRisk FactorsNeuronsSeverity of Illness IndexPsychomotor AgitationDiagnostic and Statistical Manual of Mental DisordersDisease ProgressionConfusionMental Status ScheduleProspective StudiesWord Association TestsLongitudinal StudiesCohort StudiesHypnotics and SedativesExecutive FunctionIntensive Care UnitsAphasia, Primary ProgressiveTemporal LobeCase-Control StudiesMental RecallDepressive Disorder, MajorCaregiversDepressive Disordertau ProteinsFollow-Up StudiesImage Processing, Computer-AssistedCholinesterase InhibitorsNursing HomesTrail Making TestHypnosis, AnestheticBrain MappingAttention Deficit Disorder with HyperactivityActivities of Daily LivingAmyloid beta-PeptidesPredictive Value of TestsAmnesia, AnterogradeAntipsychotic AgentsHaloperidolReproducibility of ResultsInstitutionalizationIndansMemory, EpisodicNursing DiagnosisAnalysis of VariancePrevalenceVerbal LearningAutistic DisorderAge FactorsNursing AssessmentTime FactorsCritical IllnessPsychotic DisordersObsessive-Compulsive DisorderComorbidityPostoperative ComplicationsBenzodiazepinesStress Disorders, Post-TraumaticIncidenceChild Development Disorders, PervasiveParkinson DiseasePsychoses, AlcoholicHomes for the AgedSubstance-Related DisordersPhobic Disorders