Hepatic EncephalopathyLactuloseLiver CirrhosisFlicker FusionRifamycinsAmmoniaGastrointestinal AgentsPsychometricsNeuropsychological TestsHyperammonemiaHepatic ArteryWernicke EncephalopathyHepatic VeinsEncephalopathy, Bovine SpongiformPortacaval Shunt, SurgicalLiver Failure, AcuteLiver Cirrhosis, AlcoholicBrain DiseasesLiverPortasystemic Shunt, SurgicalLiver DiseasesThioacetamideLiver FailureLiver Function TestsHypertension, PortalLiver Circulation