[The place of EEG mapping in cerebral ischemia]

70 patients with Completed stroke were studied and the findings of routine EEG, EEG mapping and CT were compared. It could be shown, that the EEG mapping revealed significantly more often focal changes corresponding with the clinical signs (83%) than the routine EEG (57%). Hypodense lesions in CT were seen in 54 patients. Identical results of EEG mapping and CT were found in 50 patients, EEG mapping and routine EEG were identical in 46 patients. The EEG mapping provided additional lateralisation in 12 patients with negative CT findings and in 21 patients with negative routine EEG. In patients with hypodense lesions in CT the EEG mapping revealed significantly more often focal changes (85%) than the routine EEG (59)%).