CHARACTERISTIC FEATURES OF EEG IN PATIENT S WITH CAUDATE LESIONS OF DIFFERENT LOCALIZATION

The study was aimed to reveal the characteristic features of EEG in 34 patients with caudate lesions depending on the localization of the pa thological process (arteriovenous malformation, AVM). Methods of multi variate statistics mere applied. It was shown that lesions in the body of the caudate nucleus (NC) were accompanied by the alpha-rhythm supp ression up to its complete disappearance at the side of AVM and at the opposite side. Lesions in the head of NC were characterized by diffus e cortex irritation and local changes of the irritative character in t he fronto-posterior and central regions at the side of AVM. Applied me thods of EEG analysis made it possible to separate the influence of AV M localization within the limits of NC from other pathological factors accompanying it and to show the role of different parts of NC in form ation of brain bioelectrical activity.