DuodenoscopyCrohn DiseaseAlzheimer DiseaseCognitionCognition DisordersAmyloid beta-PeptidesNeuropsychological TestsBrainAmyloid beta-Protein Precursortau ProteinsNeurofibrillary TanglesPlaque, AmyloidDementiaApolipoprotein E4MemoryMild Cognitive ImpairmentAgingMagnetic Resonance ImagingDementia, VascularNeurofibrilsAtrophyPresenilin-1Mental Status ScheduleAmyloid Precursor Protein SecretasesMemory DisordersAmyloidHippocampusNootropic AgentsExecutive FunctionLongitudinal StudiesApolipoproteins EMaze LearningTheory of MindCerebral CortexCholinesterase InhibitorsSocial BehaviorPeptide FragmentsNeuronsSocial PerceptionLewy Body DiseaseCognitive ReserveIndansMemory, Short-TermAttentionMemantineSchizophreniaMice, TransgenicPresenilin-2Psychiatric Status Rating ScalesAniline CompoundsPsychomotor PerformanceSchizophrenic PsychologyAge of OnsetDisease Models, AnimalBrain MappingAnalysis of VarianceLearningPhenylcarbamatesBrain ChemistryAspartic Acid EndopeptidasesFrontal LobeDisease ProgressionAffectTemporal LobeIntelligenceEmotionsIntelligence TestsCohort StudiesProdromal SymptomsNational Institute on Aging (U.S.)GalantaminePrefrontal CortexPositron-Emission TomographyAutopsyTool Use BehaviorPresenilinsImage Processing, Computer-AssistedPsychological TestsAge FactorsEmotional IntelligenceNerve DegenerationParkinson DiseaseCase-Control StudiesVerbal LearningNeurodegenerative DiseasesTacrineReaction TimeFrontotemporal DementiaSeverity of Illness IndexCerebral Amyloid AngiopathyAmnesiaGenotypePsychometricsDown SyndromeRisk FactorsBehavior, AnimalNerve Tissue ProteinsRecognition (Psychology)ThiazolesProblem Solving