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.
Edman
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A
Göteborg University, Institute of Clinical Neuroscience, Department of Psychiatry and Neurochemistry, Sahlgren Hospital, Mölndal, Sweden. ake.edman@varberg.mail.telia.com
Matousek
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M
Sjögren
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M
Wallin
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A
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