EEG FINDINGS IN PATIENTS WITH VASCULAR PARKINSONISM

Objectives - To investigate whether the conventional and quantitative EEGs of patients with vascular parkinsonism (VP) differ from those of idiopathic Parkinson's disease (PD) patients. Material and methods - T he EEGs of 13 patients with vascular parkinsonism and 14 patients with idiopathic Parkinson's disease were scored on a simple scale regardin g aspects of conventional EEG variables. Alpha band power asymmetry an d EEG slowing (increased delta and theta power) were calculated by the neurometrics method of quantitative EEG data evaluation. Results - An alysis of both conventional and quantitative EEG data shows that VP pa tients had significantly less EEG slowing than PD patients. Conclusion - This study shows that the EEG in a group of patients with vascular parkinsonism differ from a patient group with idiopathic Parkinson's d isease. Our results indicate that VP patients are not PD patients with subcortical vascular lesions, because then they would have had at lea st as much EEG slowing as PD patients.