AgnosiaFromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchFortheSpanishfilm,seeAgnosía.Forthemothgenus,seeAgnosia(moth).MedicalconditionAgnosiaAgnosiacauseslossoftheabilitytorecognizeorcomprehendthemeaningofobjectsevenwithintactsenses.SpecialtyPsychiatry,Neurology,NeuropsychologyPictureoftheventralanddorsalstreams.Theventralstreamisdepictedinpurpleandthedorsalstreamisdepictedingreen.Agnosiaistheinabilitytoprocesssensoryinformation.Oftenthereisalossofabilitytorecognizeobjects,persons,sounds,shapes,orsmellswhilethespecificsenseisnotdefectivenoristhereanysignificantmemoryloss.[1]Itisusuallyassociatedwithbraininjuryorneurologicalillness,particularlyafterdamagetotheoccipitotemporalborder,whichispartoftheventralstream.[2]Agnosiaonlyaffectsasinglemodality,[3]suchasvisionorhearing.[4]Morerecently,atop-downinterruptionisconsideredtocausethedisturbanceofhandlingperceptualinformation.[5]Contents1Types1.1Visualagnosia1.2Speechagnosia2Causes3Diagnosis3.1Purealexia3.2Prosopagnosia4Treatment4.1Verbalstrategies4.2Alternatecues4.3Organizationalstrategies4.4Alternativemedicine4.5Currentresearch5History6References7ExternallinksTypes[edit]NameDescriptionAkinetopsiaAlsoknownascerebralakinetopsia,thisisassociatedwiththeinabilitytoperceivevisualmotion.Onecauseofcerebralakinetopsiaislesionsoutsidethestriatecortex.[6]AllotopagnosiaPatientscannotpointatexternaltargetslocatedoutsidetheirownbody,whetherotherpersons'bodypartsorobjects,buttheyperfectlypointattheirownbodyparts.AnosognosiaThisistheinabilitytogainfeedbackaboutone'sownconditionandcanbeconfusedwithlackofinsightbutiscausedbyproblemsinthefeedbackmechanismsinthebrain.Itiscausedbyneurologicaldamageandcanoccurinconnectionwitharangeofneurologicalimpairmentsbutismostcommonlyreferredtoincasesofparalysisfollowingstroke.ThosewithAnosognosiawithmultipleimpairmentsmayevenbeawareofsomeoftheirimpairmentsbutcompletelyunabletoperceiveothers.ApperceptivevisualagnosiaPatientsareunabletodistinguishvisualshapesandsohavetroublerecognizing,copyi