Neurocardiogenic syncope is the pathology which is often misdiagnosed among other etiological units in the differential diagnosis of impaired consciousness. The interictal EEG findings, the comparison of EEG abnormalities in various types of neurocardiogenic syncope is studied in 21 patients. Ictal EEG during syncope and various clinical and electroclinical parameters at the time of presyncope are evaluated in 12 ictal EEG (in 11 patients). Patients suffering from convulsive and non-convulsive syncopes are compared. We find non-specific interictal abnormalities in 58% of all patients with neurocardiogenic syncope. A greater degree of this abnormality can be observed in syncope with a cardioinhibitory course. The ictal EEG study suggests that the faster is the development of syncope, the higher is the probability of convulsions.

        Key words: neurocardiogenic syncope, interictal EEG, ictal EEG, dynamic of development, convulsion