DeliriumDementiaCognition DisordersAmnesiaHistamine H3 AntagonistsNeuropsychological TestsMild Cognitive ImpairmentReceptors, Histamine H3Alzheimer DiseaseDementia, VascularNootropic AgentsMemory DisordersCognitionBrainDelirium, Dementia, Amnestic, Cognitive DisordersHistamine AntagonistsMemoryNervous System DiseasesAgingMaze LearningAlcohol Withdrawal DeliriumHippocampusDrug DiscoveryAtrophyLearningBipolar DisorderPsychiatric Status Rating ScalesMagnetic Resonance ImagingMental DisordersDementia, Multi-InfarctMotor ActivityGeriatric AssessmentMood DisordersSeverity of Illness IndexLewy Body DiseaseAIDS Dementia ComplexApolipoprotein E4Anxiety DisordersNeuronsMental Status ScheduleDiagnostic and Statistical Manual of Mental DisordersRisk FactorsDisease ProgressionPsychomotor AgitationConfusionProspective StudiesLongitudinal StudiesExecutive FunctionWord Association TestsCohort StudiesHypnotics and SedativesTemporal LobeMental RecallActivities of Daily LivingAphasia, Primary ProgressiveIntensive Care UnitsCase-Control StudiesAnalysis of VarianceFollow-Up StudiesCholinesterase Inhibitorstau ProteinsCaregiversImage Processing, Computer-AssistedDepressive Disorder, MajorDepressive DisorderTrail Making TestAmyloid beta-PeptidesBrain MappingVerbal LearningNursing HomesTime FactorsPredictive Value of TestsReproducibility of ResultsAmnesia, AnterogradeAttention Deficit Disorder with HyperactivityMemory, EpisodicIndansPrevalenceHypnosis, AnestheticAge FactorsAntipsychotic AgentsInstitutionalizationHaloperidolAutistic DisorderComorbidityPsychotic DisordersNursing DiagnosisNursing AssessmentParkinson DiseaseCritical IllnessObsessive-Compulsive DisorderCross-Sectional StudiesBenzodiazepinesCerebral CortexStress Disorders, Post-TraumaticPostoperative ComplicationsChild Development Disorders, PervasiveLanguage DisordersRecognition (Psychology)Homes for the Aged