Self-face processing in a callosotomy patient

Julian Paul Keenan, Mark Wheeler, Steven M. Platek, Gina Lardi, Maryse Lassonde

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


Self-face recognition is reserved for humans, apes and possibly dolphins and is thought to be a marker of self-awareness. Previous data have indicated that self-face recognition may be mediated via frontal right hemisphere circuits within the brain. Testing patient M.L., who underwent a total callosotomy, we found that when searching for the self-face in a series of morphs (composite facial images made up of his own and a famous face in inversely varying percentages) the patient made (i) more true-positive and (ii) fewer false-positive responses when responding with the right hemisphere (i.e. indicating with the left hand). There was no hand difference when searching for familiar faces. These data imply a right hemisphere processing advantage for self-faces.

Original languageEnglish
Pages (from-to)2391-2395
Number of pages5
JournalEuropean Journal of Neuroscience
Issue number8
StatePublished - Oct 2003


  • Callosotomy
  • Face-recognition
  • Laterally
  • Self-awareness
  • Split-brain


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