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J Neurol Neurosurg Psychiatry 1997;62:261-264 doi:10.1136/jnnp.62.3.261
  • Research Article

Impairment of facial recognition in patients with right cerebral infarcts quantified by computer aided "morphing".

  1. A Rösler,
  2. S Lanquillon,
  3. O Dippel,
  4. H J Braune
  1. Department of Neurology, Philipps University, Marburg, Germany.

      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. RESULTS AND CONCLUSION: 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.

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