DementiaDementia, VascularAlzheimer DiseaseDementia, Multi-InfarctLewy Body DiseaseAIDS Dementia ComplexCognition DisordersNeuropsychological TestsCaregiversBrainAtrophyMild Cognitive ImpairmentNursing HomesCognitionLewy BodiesParkinson Diseasetau ProteinsMagnetic Resonance ImagingNeurofibrillary TanglesFrontotemporal Lobar DegenerationApolipoprotein E4Geriatric AssessmentMemory DisordersLongitudinal StudiesPick Disease of the BrainPsychomotor AgitationAgingHomes for the AgedSeverity of Illness IndexPsychiatric Status Rating ScalesBehavioral SymptomsRisk FactorsCholinesterase InhibitorsCohort StudiesDisease ProgressionWandering BehaviorTemporal LobeInstitutionalizationAutopsyActivities of Daily LivingAmyloid beta-PeptidesPlaque, AmyloidFollow-Up StudiesNootropic AgentsFrontal LobeProspective StudiesResidential FacilitiesVital SignsAge FactorsPrevalenceNeurodegenerative DiseasesAge of OnsetMental CompetencyAphasia, Primary ProgressiveIncidenceSupranuclear Palsy, ProgressiveDelirium, Dementia, Amnestic, Cognitive DisordersDeliriumGeriatric NursingCerebrovascular DisordersPredictive Value of TestsCerebral CortexBrief Psychiatric Rating ScaleAphasiaReproducibility of ResultsHallucinationsEducational StatusApathyMemoryApolipoproteins EBehaviorAssisted Living FacilitiesMemantineCase-Control StudiesDNA Repeat ExpansionPhenylcarbamatesDepressionDiagnostic Techniques, Neurologicalalpha-Synuclein