Blog

Epilepsy surgery was first described by Horsley [1]. In Montreal in 1937, Penfield and Jasper began performing acute intraoperative electrocorticography in awake patients combined with electrical stimulations in the same step as the surgical treatment [2]. The tailored resection relied on interictal epileptiform abnormalities and on the rare recorded seizures. Electrical stimulations were not only used to localize eloquent cortex, but also to elicit seizures or afterdischarges that were recognized as useful in identifying epileptogenic tissue [3].