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NEUROLOGY 1975;25:10
© 1975 American Academy of Neurology

Psychologic and neurologic consequences of partial and complete cerebral commissurotomy

M. S. GAZZANIGA, Ph.D., G. L. RISSE, M.S., S. P. SPRINGER, Ph.D., E. CLARK, A.B. and D. H. WILSON, M.D.

Department of Psychology, State University of New York, Stony Brook.

Preliminary psychologic testing was carried out on four patients who had undergone surgical sectioning of a portion or all of the corpus callosum and anterior commissure as a treatment for uncontrollable seizures. Results confirm earlier findings indicating the importance of the forebrain commissures in the interhemispheric exchange of a variety of sensory and motor information, and demonstrate that particular portions of the commissural system are responsible for transferring the information of specific sensory modalities. The patients also showed surprising abilities in performing complex tasks assumed to require integration of information from both hemispheres.

This study was supported in part by USPHS grant 17883–04 awarded to M. S. Gazzaniga.

Parts of this report were presented at the twenty-sixth annual meeting of the American Academy of Neurology, San Francisco, 1974.

Received for publication August 12, 1974.

Dr. Gazzaniga's address is Department of Psychology, State University of New York at Stony Brook, Stony Brook, NY 11794.




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