Objectives Asomatognosia is broadly defined as unawareness of ownership of one's arm, while somatoparaphrenia is a subtype in which patients also display ...SkiptomaincontentYouarehereHomeArchiveVolume81, Issue3TheneuroanatomyofasomatognosiaandsomatoparaphreniaEmailalertsArticleTextArticlemenuArticleTextArticleinfoCitationToolsShareRapidResponsesArticlemetricsAlertsPDFResearchpaperTheneuroanatomyofasomatognosiaandsomatoparaphreniaToddEFeinberg1,2,AnnalenaVenneri3,4,AnnaMariaSimone4,YanFan5,GeorgNorthoff61AlbertEinsteinCollegeofMedicine,Bronx,NewYork,USA2YarmonNeurobehaviorandAlzheimer'sDiseaseCenter,BethIsraelMedicalCenter,NewYork,USA3ClinicalNeuroscienceCentre,UniversityofHull,Hull,UK4DepartmentofNeuroscience,UniversityofModenaandReggioEmilia,Modena,Italy5DepartmentofPsychiatry,Otto-von-GueirckeUniversity,Magdeburg,Germany6UniversityofOttawaInstituteofMentalHealthResearch,Ottawa,CanadaCorrespondencetoDrToddEFeinberg,YarmonNeurobehaviorandAlzheimer'sDiseaseCenter,BethIsraelMedicalCenter,FirstAvenueat16thStreet,NewYork,NY10003,USA;tfeinber{at}chpnet.orgAbstractObjectivesAsomatognosiaisbroadlydefinedasunawarenessofownershipofone'sarm,whilesomatoparaphreniaisasubtypeinwhichpatientsalsodisplaydelusionalmisidentificationandconfabulation.Studiesdifferwithregardtotheunderlyingneuroanatomyofthesesyndromes.MethodsThreegroupsofpatientswithright-hemispherestrokesandlefthemiplegiawereanalysed:G1,asomatognosia+neglect;G2,non-asomatognosia+neglect;G3,hemiplegiaonly.Theasomatognosicgroupwasfurthersubdividedintosomatoparaphrenia(G1-SP:asomatognosia+delusions/confabulation)andsimpleasomatognosia(G1-SA;asomatognosiawithoutdelusions/confabulation).ResultsPatientswithallformsofasomatognosia(G1)hadlargerlesionsthannon-asomatognosicpatientsinallsectors.Whilepatientswithorwithoutasomatognosiahadsignificanttemporoparietalinvolvement,wefoundthatthesubsetofpatientswithsomatoparaphreniahadthelargestlesionsoverall,andsomatoparaphreniacaseshadsignificantlymorefrontalinvolvementthanpatientswiths