Atrial Function, LeftAtrial FunctionAtrial Function, RightHeart AtriaEchocardiography, DopplerCognitionAtrial FibrillationCognition DisordersEchocardiography, Doppler, PulsedElectric CountershockPericardiectomyMyocardial ContractionEchocardiographyHeart Function TestsNeuropsychological TestsEchocardiography, TransesophagealVentricular Function, LeftObserver VariationVentricular FunctionStroke VolumeBlood Flow VelocityMemoryHemodynamicsAgingIntelligence TestsMental Status ScheduleMaze LearningBrainMemory DisordersExecutive FunctionVentricular Function, RightDementiaHuman RightsTrail Making TestVentricular Dysfunction, RightMagnetic Resonance ImagingIntelligencePsychological TestsPsychomotor PerformanceAttentionLongitudinal StudiesLead Poisoning, Nervous System, AdultAlzheimer DiseaseHippocampusMemory, Short-TermAnalysis of VarianceWechsler ScalesMild Cognitive Impairment