Additional electrodes can be used to supplement the standard System

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Additional electrodes can be used to supplement the standard 10-20 System.115 Ninety-seven percent of spikes are detected using additional anterior temporal region surface electrodes (T1 and T2), whereas 58% of the spikes are detected using only 10-20 System electrodes. Anterior temporal electrodes (T1 and T2) are able to detect nearly all interictal epileptiform discharges recorded by the foramen ovale electrode. Therefore, assuming that the location of the foramen ovale electrode is analogous to that of sphenoidal electrodes optimally implanted under fluoroscopy, the use of sphenoidal electrodes in routine interictal investigations appears not to be justified.116 Source: Focal Epilepsy, Atlas of Pediatric EEG Citation: Laoprasert P. Atlas of Pediatric EEG; 2011 Available at: https://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/1042/lao001_fig_09-68.gif&sec=59080135&BookID=1042&ChapterSecID=59078731&imagename= Accessed: October 15, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved