The visual word form area Spatial and temporal characterization of an initial stage of reading in normal subjects and posterior split - brain patients

  • Cohen L
  • Dehaene S
  • Naccache L
 et al. 
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Abstract

See, stats, and : https : / / www . researchgate. net / publication / 12667005 Cohen , L . et . The : spatial and of - brain . Brain , 2 . . . Article Impact : 9 . 2 : 10 . 1093 / brain / 123 . 2 . 291 : PubMed CITATIONS 1 , 044 READS 90 7 , including : Laurent Hôpital (Groupe 247 , 462 SEE Ghislaine - Lambertz French 146 , 676 SEE All - text , letting . Available : Laurent Retrieved : 24 Brain (2000) , 123 , 291 – 307 Summary A standard model of word reading postulates that visual information is initially processed by occipitotemporal areas contralateral to the stimulated hemifield , from whence it is subsequently transferred to the visual word form (VWF) system , a left inferior temporal region specifically devoted to the processing of letter strings . For stimuli displayed in the left visual field , this transfer proceeds from the right to the left hemisphere through the posterior portion of the corpus callosum . In order to characterize the spatial and temporal organization of these processes , reading tasks with split-fieldpresentationwereperformedbyfivecontrolsubjectsandbytwopatientssufferingfromlefthemialexiafollowingposteriorcallosallesions.Thesubjects'responseswerestudiedusingbehaviouralmeasuresandfunctionalbrainimagingtechniques,providingbothhighspatialresolution(functionalMRI,fMRI)andhightemporalresolution(high-densityevent-relatedpotentials,ERPs).Earlyvisualprocessingwasrevealedasactivationscontralateraltostimulation,locatedbyfMRIintheinferioroccipitotemporalregionandpresumablycoincidentwith

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Authors

  • Laurent Cohen

  • Stanislas Dehaene

  • Lionel Naccache

  • Stéphane Lehéricy

  • Ghislaine Dehaene-Lambertz

  • Marie-Anne Hénaff

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