Abstract
Abnormal EEGs were found in 12 out of 48 patients (25%) suffering from Menière's disease. No significant differences were noted between the preoperative EEG records and those performed 10 days after ultrasonic irradiation of the labyrinth. No significant correlation was noted between the EEG findings and the findings concerning caloric directional preponderance. Before treatment 28 patients out of 48 showed a directional preponderance, in 17 directed from and in 11 towards the diseased labyrinth. After ultrasonic irradiation 33 patients showed a preponderance, in 27 directed from and in 6 directed towards the diseased labyrinth.