DeliriumDelirium, Dementia, Amnestic, Cognitive DisordersDementiaCognition DisordersAmnesiaHistamine H3 AntagonistsNeuropsychological TestsReceptors, Histamine H3Mild Cognitive ImpairmentAlzheimer DiseaseDementia, VascularNootropic AgentsMemory DisordersCognitionBrainBipolar DisorderHistamine AntagonistsMemoryNervous System DiseasesMental DisordersMood DisordersAnxiety DisordersAgingAlcohol Withdrawal DeliriumMaze LearningDrug DiscoveryHippocampusDiagnostic and Statistical Manual of Mental DisordersPsychiatric Status Rating ScalesAtrophyLearningMagnetic Resonance ImagingDepressive Disorder, MajorDementia, Multi-InfarctDepressive DisorderMotor ActivityAttention Deficit Disorder with HyperactivitySeverity of Illness IndexLewy Body DiseaseGeriatric AssessmentNeuronsRisk FactorsAIDS Dementia ComplexApolipoprotein E4Obsessive-Compulsive DisorderStress Disorders, Post-TraumaticAutistic DisorderPsychotic DisordersPsychomotor AgitationDisease ProgressionPhobic DisordersConfusionProspective StudiesMental Status ScheduleLongitudinal StudiesSubstance-Related DisordersChild Development Disorders, PervasiveWord Association TestsCohort StudiesExecutive FunctionHypnotics and SedativesComorbidityConduct DisorderCase-Control StudiesTemporal LobeIntensive Care UnitsTic DisordersAphasia, Primary ProgressivePrevalenceFollow-Up StudiesMental RecallSleep DisordersImage Processing, Computer-AssistedAntipsychotic AgentsCaregiversBrain Mappingtau ProteinsAnalysis of VarianceReproducibility of ResultsCholinesterase InhibitorsBorderline Personality DisorderNursing HomesTrail Making TestActivities of Daily LivingSomatoform DisordersPredictive Value of TestsAge FactorsHypnosis, AnestheticTime FactorsHaloperidolAmyloid beta-PeptidesInstitutionalizationAmnesia, AnterogradeVerbal LearningIndansMemory, EpisodicMovement DisordersBenzodiazepinesNursing DiagnosisPsychotropic Drugs