1. The scalp EEG is frequently negative or maybe misleading; furthermore, spread of epileptic discharges from the parietal and occipital lobes to frontal and temporal regions may obscure seizure origin.82 Ictal EEG in PLE is predominantly lateralized; the maximum ictal activity was over either the central-parietal or the posterior head region in most patients. Localized parietal seizure onset was noted in only 4 out of 36 patients.83 Surface EEG monitoring is often nonlocalizing and unreliable for parietal lobe seizures.84,85 Foldvary et al. reported false localization/lateralization in 16% of PLE.56 The low sensitivity of extracranial ictal EEG may have been related to the predominance of simple partial seizures.86
Source: Focal Epilepsy, Atlas of Pediatric EEG
Citation: Laoprasert P. Atlas of Pediatric EEG; 2011 Available at: Accessed: October 26, 2017
Copyright © 2017 McGraw-Hill Education. All rights reserved