title: Impairment of facial recognition in patients with right cerebral infarcts quantified by computer aided "morphing".
abstract: OBJECTIVE
  To investigate where facial recognition is located anatomically and to establish whether there is a graded transition from unimpaired recognition of faces to complete prosopagnosia after infarctions in the territory of the middle cerebral artery.
  
  
  METHODS
  A computerised morphing program was developed which shows 30 frames gradually changing from portrait photographs of unfamiliar persons to those of well known persons. With a standardised protocol, 31 patients with right and left sided infarctions in the territory of the middle cerebral artery and an age and sex matched control group were compared by non-parametric tests.
  
  
  CONCLUSIONS
  Facial recognition in patients with right sided lesions was significantly impaired compared with controls and with patients with left sided lesions. A graded impairment in facial recognition in patients with right sided ischaemic infarcts in the territory of the middle cerebral artery seems to exist.
authors.affiliation: Department of Neurology, Philipps University, Marburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Rösler
authors.forename: S
authors.initials: S
authors.lastname: Lanquillon
authors.forename: O
authors.initials: O
authors.lastname: Dippel
authors.forename: H J
authors.initials: HJ
authors.lastname: Braune
mesh_terms: D002544:Cerebral Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology*; D003196:Computer Graphics; D005149:Facial Expression; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D016013:Likelihood Functions; D008297:Male; D010296:Parietal Lobe / Q000503:physiopathology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D012984:Software; D018709:Statistics, Nonparametric; D014057:Tomography, X-Ray Computed