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May 1961

Temporal Epilepsies with Deep-Seated Epileptogenic Foci: Postoperative Course

Author Affiliations

From the Institute of Neurosurgery.

Arch Neurol. 1961;4(5):559-571. doi:10.1001/archneur.1961.00450110089009

To classify the epilepsies into 2 great pathogenetical groups, notably symptomatic and cryptogenetic (genuine, idiopathic) epilepsies, had been indispensable in clinical practice until it was made possible by the eletroencephalogram to obtain a picture of the events taking place in the skull without gross- or microanatomical studies.

Thus, Penfield and Jasper1 suggested a "working classification" that may be used by the clinician before opening the skull. Instead of the pathogenesis, the authors have relied upon localization, stating that "it is important from therapeutic point of view to decide whether patients have attacks that arise (1) in the cerebral cortex, or (2) in a subcortical (centrencephalic) region." Penfield and Jasper1 mention also a third group, that of "unlocalized" epilepsies. This classification has, in fact, proved to be highly useful in clinical practice, and we, too, rely upon it in this paper. However, as to clinical encephalographic terminology, we feel

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