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EEG findings in patients with vascular parkinsonism
J C Zijlmans1, J W Pasman, M W Horstink
1Department of Neurology, University Hospital Nijmegen, The Netherlands.
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:
The EEGs of 13 patients with vascular parkinsonism and 14 patients with idiopathic Parkinson's disease were scored on a simple scale regarding aspects of conventional EEG variables. Alpha band power asymmetry and EEG slowing (increased delta and theta power) were calculated by the neurometrics method of quantitative EEG data evaluation.
Results:
Analysis of both conventional and quantitative EEG data shows that VP patients 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 disease. Our results indicate that VP patients are not PD patients with subcortical vascular lesions, because then they would have had at least as much EEG slowing as PD patients.