Unilateral left prosopometamorphopsia: A neuropsychological case study

Luigi Trojano, Massimiliano Conson, Sara Salzano, Valentino Manzo, Dario Grossi

Research output: Contribution to journalArticlepeer-review


We describe a patient who suddenly developed prosopometamorphopsia after a childbirth; she claimed that the left half of well-known and unfamiliar faces looked distorted. Brain MR was normal, whereas SPECT showed hypoperfusion of the left infero-lateral occipital cortex. No visual recognition defects for objects or faces were present. In three matching tasks with half-faces (Experiment 1), chimeric faces (Experiment 2), or chimeric objects (Experiment 3), the patient was impaired only when she matched pairs of chimeric faces differing in their left half; the same results were obtained after 1 year. This is the first behavioural demonstration of selective chronic metamorphopsia for the left side of faces, and provides new insights for models of face processing.

Original languageEnglish
Pages (from-to)942-948
Number of pages7
Issue number3
Publication statusPublished - Feb 2009


  • Face processing
  • Occipital lobe
  • Prosopometamorphopsia

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology


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