[Concerfing the E.E.G. changes after the Spiller-Frazer operation for the treatment of trigeminal neuralgia (author's transl)].

A follow-up of 28 patients with trigeminal neuralgia, with E.E.G. examinations was carried out at periods of 6 months to 4 years, after they had been operated on by the Spiller-Frazier method. Acturally in 14 out of the 28, discrete focal changes were observed but they were however, not so marked that one could speak of an actural focus. In comparison with the findings of other authors, the trivial nature of the changes is emphasized and it attributed to the pre-operative preparation, the position of the patients and to particular features of the operative technique.