HemispatialneglectFromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchMedicalconditionHemispatialneglectOthernamesHemiagnosia,hemineglect,unilateralneglect,spatialneglect,contralateralneglect,unilateralvisualinattention,[1]hemi-inattention,[1]neglectsyndrome,one-sideneglect,[2]orcontralateralhemispatialagnosiaHemispatialneglectismostfrequentlyassociatedwithalesionoftherightparietallobe(inyellow,attop).SpecialtyPsychiatry,NeurologyHemispatialneglectisaneuropsychologicalconditioninwhich,afterdamagetoonehemisphereofthebrainissustained,adeficitinattentiontoandawarenessofonesideofthefieldofvisionisobserved.Itisdefinedbytheinabilityofapersontoprocessandperceivestimuliononesideofthebodyorenvironment,wherethatinabilityisnotduetoalackofsensation.[1]Hemispatialneglectisverycommonlycontralateraltothedamagedhemisphere,butinstancesofipsilesionalneglect(onthesamesideasthelesion)havebeenreported.[3]Contents1Presentation1.1Effects2Causes3Theoriesofmechanism3.1Spatialattention3.2Spatialrepresentation4Diagnosis4.1Varieties4.1.1Type4.1.2Range4.1.3Axis4.1.4Orientation5Treatment6Seealso7References8FurtherreadingPresentation[edit]Hemispatialneglectresultsmostcommonlyfromstrokesandbrainunilateralinjurytotherightcerebralhemisphere,withratesinthecriticalstageofupto80%causingvisualneglectoftheleft-handsideofspace.Neglectisoftenproducedbymassivestrokesinthemiddlecerebralarteryregionandisvariegated,sothatmostsufferersdonotexhibitallofthesyndrome'straits.[4]Right-sidedspatialneglectisrarebecausethereisredundantprocessingoftherightspacebyboththeleftandrightcerebralhemispheres,whereasinmostleft-dominantbrainstheleftspaceisonlyprocessedbytherightcerebralhemisphere.Althoughitmoststrikinglyaffectsvisualperception('visualneglect'),neglectinotherformsofperceptioncanalsobefound,eitheraloneorincombinationwithvisualneglect.[5]Forexample,astrokeaffectingtherightparietallobeofthebraincanleadtoneglectfortheleftsideofthevisualfield,causingapatientwithneglecttobehaveasiftheleftsideofsensoryspaceisnon