Neuropsychological Studies on Partial Split-Brain Patients in Japan

  • Makoto Iwata
  • Yasuo Toyokura


Although neurological syndromes due to callosal disconnection such as buccofacial apraxia or pure alexia are fairly common, patients with primary lesions of the corpus callosum are not so frequently encountered in routine neurological examinations. However, careful attention to possible callosal damage in various neurological disorders can enable the practitioner to see a number of patients with primary callosal pathology, and detailed neuropsychological and neurological studies upon these patients can provide much valuable information with regard to the functional topography of the corpus callosum that is not readily available in studies of total callosal section for epilepsy (Iwata, 1979, 1980). In the present chapter we describe our studies upon partial lesions of the corpus callosum from various causes and discuss the functional topography of callosal transfer between the two cerebral hemispheres.


Corpus Callosum Vascular Malformation Posterior Portion Left Visual Field Pineal Tumor 
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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Makoto Iwata
    • 1
  • Yasuo Toyokura
    • 1
  1. 1.Department of Neurology, Institute of Brain Research, Faculty of MedicineUniversity of TokyoTokyoJapan

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