Split-brain reveals separate but equal self-recognition in the two cerebral hemispheres

Lucina Q. Uddin, Jan Rayman, Eran Zaidel

Research output: Contribution to journalArticle

40 Scopus citations


To assess the ability of the disconnected cerebral hemispheres to recognize images of the self, a split-brain patient (an individual who underwent complete cerebral commissurotomy to relieve intractable epilepsy) was tested using morphed self-face images presented to one visual hemifield (projecting to one hemisphere) at a time while making "self/other" judgments. The performance of the right and left hemispheres of this patient as assessed by a signal detection method was not significantly different, though a measure of bias did reveal hemispheric differences. The right and left hemispheres of this patient independently and equally possessed the ability to self-recognize, but only the right hemisphere could successfully recognize familiar others. This supports a modular concept of self-recognition and other-recognition, separately present in each cerebral hemisphere.

Original languageEnglish (US)
Pages (from-to)633-640
Number of pages8
JournalConsciousness and Cognition
Issue number3
StatePublished - Sep 1 2005
Externally publishedYes



  • Faces
  • Hemispheric specialization
  • Laterality
  • Self-awareness

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology

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