EEG FINDINGS IN DEMENTIA ARE RELATED TO THE PARIETAL LOBE SYNDROME

EEG indicators were correlated with clinical items in 174 patients wit h dementia diagnoses based on the DSM-III-R criteria. The patients' cl inical symptomatologies were presented as regional brain syndromes, i. e. parietal lobe, frontal lobe, subcortical and global (nonregional) s yndromes. The EEGs were abnormal in 87% of the cases. The typical abno rmalities consisted of diffusely distributed slow wave activity. A sig nificant correlation was found between the degree of slow wave abnorma lity and the degree of dementia. The results of the statistical analys is also suggest that EEG slow wave activity in dementia primarily refl ects parietal lobe dysfunction. No association seems to exist between EEG slow wave activity and frontal lobe dysfunction.