Transient crossed aphasia evidenced by functional brain imagery

Asaid Khateb, Marie Dominique Martory, Jean Marie Annoni, François Lazeyras, Nicolas De Tribolet, Alan J. Pegna, Eugène Mayer, Christoph M. Michel, Mohamed L. Seghier

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Crossed aphasia refers to language deficits induced by unilateral right hemisphere injuries in right-handed people who had no previous history of brain damage. One of the intriguing questions concerning crossed aphasia is the atypical language representation in the brain. In this respect, fMRI is a valuable tool for understanding the neural basis of crossed aphasia. Here, we used neuropsychological and fMRI language tasks in a right-handed subject who presented a crossed aphasia due to a right frontal meningioma. fMRI maps from two language tasks showed bilateral patterns of activation. In the light of previous studies reporting much frequent bilateral than exclusive right hemisphere representations, we hypothesise that some crossed aphasia cases could occur in subjects with bilateral language representation.

Original languageBritish English
Pages (from-to)785-790
Number of pages6
JournalNeuroReport
Volume15
Issue number5
DOIs
StatePublished - 9 Apr 2004

Keywords

  • Aphasia
  • Language representation
  • Rhyme detection
  • Right hemisphere
  • Semantic categorisation

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