title: Agnosia for mirror stimuli: a new case report with a small parietal lesion.
abstract: Only seven cases of agnosia for mirror stimuli have been reported, always with an extensive lesion. We report a new case of an agnosia for mirror stimuli due to a circumscribed lesion. An extensive battery of neuropsychological tests and a new experimental procedure to assess visual object mirror and orientation discrimination were assessed 10 days after the onset of clinical symptoms, and 5 years later. The performances of our patient were compared with those of four healthy control subjects matched for age. This test revealed an agnosia for mirror stimuli. Brain imaging showed a small right occipitoparietal hematoma, encompassing the extrastriate cortex adjoining the inferior parietal lobe. This new case suggests that: (i) agnosia for mirror stimuli can persist for 5 years after onset and (ii) the posterior part of the right intraparietal sulcus could be critical in the cognitive process of mirror stimuli discrimination.
authors.affiliation: Department of Neurology, Rouen University Hospital, Rouen, France olivier.martinaud@chu-rouen.fr.
authors.forename: Olivier
authors.initials: O
authors.lastname: Martinaud
authors.affiliation: Department of Neurology, Rouen University Hospital, Rouen, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Mirlink
authors.affiliation: Department of Neurology, Rouen University Hospital, Rouen, France.
authors.forename: Sandrine
authors.initials: S
authors.lastname: Bioux
authors.affiliation: Department of Neurology, Rouen University Hospital, Rouen, France.
authors.forename: Evangéline
authors.initials: E
authors.lastname: Bliaux
authors.affiliation: Department of Neurophysiology, Rouen University Hospital, Rouen, France.
authors.forename: Axel
authors.initials: A
authors.lastname: Lebas
authors.affiliation: Department of Neuroradiology, Rouen University Hospital, Rouen, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Gerardin
authors.affiliation: Department of Neurology, Rouen University Hospital, Rouen, France.
authors.forename: Didier
authors.initials: D
authors.lastname: Hannequin
mesh_terms: D000368:Aged; D000377:Agnosia / Q000503:physiopathology*; D001072:Apraxias / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D010296:Parietal Lobe / Q000473:pathology / Q000503:physiopathology*
keywords: Agnosia for mirror stimuli; Dressing apraxia; Occipito-parietal lesion; Orientation agnosia; Stroke