[EEG in multi-infarcts with and without intellectual deterioration].

The character and extent of changes in EEG in 124 patients with multiple infarctions, verified by CT, were reported. Further, the EEG diagnoses of patients with (55) or without (50) accompanying dementia were compared. In 19 patients the evidence of dementia could not be defined clearly. The EEG-diagnoses in these patients were compared with a group consisting of 41 patients with primary degenerative dementia (Alzheimer). The EEG showed pathological results in 89 patients with multiple infarctions and focal abnormalities were dominant. In 55 patients with symptoms of dementia and multiple infarctions significantly more pathological EEG-reports were present than in the other patients with multiple-infarcts and a significantly slower basic rhythm could be found. In patients with neurological deficits as compared to the group without neurological symptoms and multiple infarctions the pathological changes dominated significantly. The comparison between patients with multi-infarct-dementia and 41 patients with a senile dementia of the Alzheimer type only revealed a more frequent occurrence of focal abnormalities in patients with multi-infarct-dementia. However there was no significant difference between the number of normal and pathological EEGs.