EEG frequency analysis in the course of acute ischemic stroke |
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Authors: | K -A Hossmann W -D Heiss H Bewermeyer G Mies |
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Institution: | (1) Max-Planck-Institut für Hirnforschung, Forschungsstelle für Hirnkreislaufforschung, Ostmerheimerstraße 200, 5000 Köln 91 (Merheim), Federal Republic of Germany |
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Abstract: | Summary In 18 patients with acute cerebrovascular disease (17 ischemic, 1 hemorrhagic stroke) neurological symptoms were scored repeatedly using a rating scale for disturbance of consciousness, motor dysfunctions, disturbance of higher cortical functions, abnormalities of cranial nerves, and impairment of sensations, and related to EEG-abnormalities quantified by frequency analysis. A correspondence between location of neurologic lesion and EEG focus was found in 87%, but correlation between neurologic score and the degree of EEG-abnormality was low. Changes of clinical defects were not significantly related to various quantified EEG parameters. These results suggest that computerized EEG analysis has to be used with caution for quantifying the clinical course of stroke patients.Dedicated to Professor K. J. Zülch on the occasion of his 70th birthday. |
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Keywords: | Cerebrovascular disease EEG frequency analysis Neurological score |
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