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August 1961

Electrical Activity of the Brain: In Patients Treated with Hemispherectomy or Extensive Decortication

Author Affiliations

From the Departments of Neurology and Neurosurgery, Neurological Institute, Columbia-Presbyterian Medical Center.

Arch Neurol. 1961;5(2):210-220. doi:10.1001/archneur.1961.00450140092009

The value of electroencephalography and electrocorticography in the selection of patients for hemispherectomy in attempts to control seizures is not established. Cobb and Pampiglione1 reported that the electroencephalogram was of no help in the selection of patients for hemispherectomy. Ajmone-Marsan and Baldwin,2 however, attempted to relate their classification of EEG abnormalities in massive cerebral lesions with prognosis following hemispherectomy. Since the early report by Krynauw3 on the use of hemispherectomy for intractable seizures, the use of EEG has been described with regularity, but most authors4-6 have not attempted to evaluate it as an aid in prognosis. The present study is designed to reexamine this question on the basis of our experience with 11 patients with infantile hemiplegia and intractable convulsions treated by hemispherectomy or extensive decortication.

Case Material  The 11 patients were between 3 and 32 years of age (average age of 151/2 years) at the

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