Electrooculogram and submandibular montage to distinguish different eye, eyelid, and tongue movements in electroencephalographic studies

Different types of ictal eye and eyelid movements have been described in the literature. In some generalized epilepsies, such as Jeavons Syndrome, eyelid myoclonia is a cardinal symptom (Jeavons, 1977). In focal epilepsies, eye and head version have an important lateralizing value regarding the epileptogenic zone (Rasmussen and Penfield, 1948; Wyllie et al., 1986). Eyelid flutter, forced rapid blinking, oculoclonic seizures, or epileptic nystagmus have all been described as having localizing value pointing to a posterior quadrant epileptogenic zone (Bancaud et al., 1965; Foerster and Penfield, 1930; Gastaut, 1960; Gastaut and Roger, 1954; Salanova et al., 1992; Williamson et al., 1992).

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