Interhemispheric transfer time in a patient with a partial lesion of the corpus callosum

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Abstract

The interhemispheric transfer time (ITT) of basic visuo-motor integration was investigated in a patient who had a lesion of the corpus callosum that spared the splenium and rostrum. Overall, 4291 simple reaction times were collected during unimanual responses to tachistoscopically presented lateralized simple visual stimuli at 4°,6° and 10°. Despite retaining some abilities that typically require the integration of information between hemispheres (e.g. haptic naming, tachistoscopic lateralized consonant reading) the patient performed similarly to completely callosotomized patients in a basic visuo-motor ITT task (overall 25.5 ms) at any eccentricity. These findings suggest that specific callosal channels mediate the basic visuo-motor ITT and these do not include the rostrum and/or the splenium of the corpus callosum.

Original languageEnglish
Pages (from-to)1469-1472
Number of pages4
JournalNeuroReport
Volume12
Issue number7
Publication statusPublished - May 25 2001

Keywords

  • Callosal lesion
  • Corpus callosum
  • Interhemispheric transfer time

ASJC Scopus subject areas

  • Neuroscience(all)

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