DeliriumDementiaCognition DisordersAmnesiaDepressionHistamine H3 AntagonistsNeuropsychological TestsReceptors, Histamine H3Mild Cognitive ImpairmentAlzheimer DiseaseDementia, VascularNootropic AgentsCognitionMemory DisordersBrainDelirium, Dementia, Amnestic, Cognitive DisordersHistamine AntagonistsMemoryDepressive DisorderNervous System DiseasesPsychiatric Status Rating ScalesAgingAlcohol Withdrawal DeliriumDepressive Disorder, MajorHippocampusMaze LearningDrug DiscoveryBipolar DisorderAtrophyDepression, PostpartumAnxiety DisordersMental DisordersLearningMood DisordersCortical Spreading DepressionMagnetic Resonance ImagingSeverity of Illness IndexGeriatric AssessmentDiagnostic and Statistical Manual of Mental DisordersDementia, Multi-InfarctRisk FactorsMotor ActivityAntidepressive AgentsNeuronsLongitudinal StudiesLewy Body DiseaseProspective StudiesApolipoprotein E4Psychomotor AgitationAIDS Dementia ComplexMental Status ScheduleAnxietyDisease ProgressionConfusionCohort StudiesComorbidityLong-Term Synaptic DepressionWord Association TestsFollow-Up StudiesExecutive FunctionHypnotics and SedativesCaregiversQuestionnairesPrevalenceAnalysis of VarianceTime FactorsActivities of Daily LivingIntensive Care UnitsCross-Sectional StudiesCase-Control StudiesMental RecallStress Disorders, Post-TraumaticTemporal LobeAphasia, Primary ProgressiveReproducibility of ResultsNursing HomesImage Processing, Computer-AssistedPredictive Value of TestsAge FactorsTreatment OutcomeCholinesterase InhibitorsBrain MappingAntipsychotic AgentsPsychometricsTrail Making Testtau ProteinsAttention Deficit Disorder with HyperactivityPsychotic DisordersNursing AssessmentStress, PsychologicalHypnosis, AnestheticInstitutionalizationNursing DiagnosisIndansGeriatric PsychiatryHaloperidolVerbal LearningSubstance-Related DisordersAmnesia, AnterogradeAmyloid beta-Peptides