A close relationship exists between heterotopic nodules and cortical regions in bilateral PNH, with an epileptogenic network including both structures. This finding may explain why a surgery limited to the temporal lobe fails to stop the seizures in these patients.280 Source: Focal Epilepsy, Atlas of Pediatric EEG Citation: Laoprasert P. Atlas of Pediatric EEG; 2011 Available at: http://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/1042/lao001_fig_09-149.gif&sec=59080216&BookID=1042&ChapterSecID=59078731&imagename= Accessed: November 01, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved