[Electroencephalograph findings in pituitary tumor with special reference to various surgical methods].

The evaluation included pre- and postoperative Eegs of 147 patients who were operated on because of a hypophysoma by the subfrontal or the transphenoidal way. For comparison proper, the Eeg series of 64 patients were used. No verified differences between the two surgical accesses were found with respect to the effects on the total brain organ.