Longitudinal EEG findings in dementia related to the parietal brain syndrome and the degree of dementia.
EEG slow-wave activity was correlated with the regional brain syndrome profile in 74 patients with dementia. The EEGs were visually assessed using a semiquantitative rating scale. The intensities of four regional brain syndromes (parietal, frontal, subcortical, global) and the degree of dementia were rated. The patients were examined twice with a 1-year interval. A significant relationship was found between the increase in EEG slow-wave activity and the increase in intensity of the parietal brain syndrome. A somewhat lower significance was found for the relation between increase in slow-wave activity and increase in dementia degree. The results suggest that the EEG deterioration in dementia mainly reflects the gradual decline of parietal brain function.
Göteborg University, Institute of Clinical Neuroscience, Department of Psychiatry and Neurochemistry, Sahlgren Hospital, Mölndal, Sweden. ake.edman@varberg.mail.telia.com
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Edman
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Matousek
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Sjögren
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Wallin
D000368:Aged; D001921:Brain / Q000503:physiopathology; D016009:Chi-Square Distribution; D003704:Dementia / Q000503:physiopathology*; D018450:Disease Progression; D004569:Electroencephalography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010296:Parietal Lobe / Q000503:physiopathology*; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric