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Britton JW, Frey LC, Hopp JLet al., authors; St. Louis EK, Frey LC, editors. Electroencephalography (EEG): An Introductory Text and Atlas of Normal and Abnormal Findings in Adults, Children, and Infants [Internet]. Chicago: American Epilepsy Society; 2016.

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Electroencephalography (EEG): An Introductory Text and Atlas of Normal and Abnormal Findings in Adults, Children, and Infants [Internet].

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Figure 74.. Extratemporal seizures of (a) frontal lobe and (b) occipital lobe origin.

Figure 74.

Extratemporal seizures of (a) frontal lobe and (b) occipital lobe origin. (a) Recorded seizure of right frontal lobe onset is shown in the longitudinal Laplacian referential montage. Seizure onset is manifested as rhythmic sharp activity involving FP2 and F8 (filled arrows). The seizure discharge then evolves into a rhythmic delta discharge involving the midline and right frontal derivations (open arrows). (b) Left occipital onset seizure is shown in the longitudinal bipolar montage, with left hemispheric derivations in the upper half and right hemispheric derivations in the lower half. The seizure onset is at P3-O1 and P7-O1 (filled arrows). Copyright 2013. Mayo Foundation for Medical Education and Research. All rights reserved. Figure courtesy of Jeffrey W. Britton, MD.

(a)Frontal lobe seizure

(b)Occipital lobe seizure

From: EEG in the Epilepsies

Copyright ©2016 by American Epilepsy Society.

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