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Comparative Study
. 2018 Jul:84:148-151.
doi: 10.1016/j.yebeh.2018.04.032. Epub 2018 May 26.

Language mapping using electrocorticography versus stereoelectroencephalography: A case series

James J Young  1 , Kelly Coulehan  2 , Madeline C Fields  2 , Ji Yeoun Yoo  2 , Lara V Marcuse  2 , Nathalie Jette  2 , Fedor Panov  3 , Saadi Ghatan  3 , Heidi A Bender  2
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Comparative Study

Language mapping using electrocorticography versus stereoelectroencephalography: A case series

James J Young et al. Epilepsy Behav. 2018 Jul.

Abstract

Direct electrical stimulation (DES) is sometimes used in epilepsy surgery to identify areas that may result in language deficits if resected. Extraoperative language mapping is usually performed using electrocorticography (ECOG) - grids and strip electrodes; however, given the better safety profile of stereoelectroencephalogaphy (SEEG), it would be desirable to determine if mapping using SEEG is also effective. We report a case series of fifteen patients that underwent language mapping with either ECOG (5), SEEG (9), or both (1). Six patients in the SEEG group underwent resection or ablation with only mapping via SEEG. No patients in the SEEG group that underwent resective or ablative surgery experienced persistent language deficits. These results suggest that language mapping with SEEG may be considered as a clinically useful alternative to language mapping with ECOG.

Keywords: Case series; Direct electrical stimulation; Electrocorticography; Language mapping; Stereoelectroencephalogaphy.

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Conflict of interest statement

Disclosure of conflict of interest

None of the authors has any conflict of interest to disclose.

Figures

Fig. 1.
Fig. 1.
Locations of language hits for SEEG and grid and strip studies. (A) The compiled results from language mapping from the 6 grid and strip studies. The locations of any language deficit produced by stimulation are indicated by red dots whereas the locations with no deficit are indicated by green dots. (B) The compiled results from language mapping from the 10 SEEG studies. The locations of any language deficit produced by stimulation are indicated by red dots whereas the locations with no deficit are indicated by green dots.
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