Usefulness of EEG-EMG coherence analysis to confirm epileptic nature of spells mimicking hemifacial spasms

Focal seizures mimicking hemifacial spasm have rarely been reported (Towfigh et al., 1997; Espay et al., 2008). Differential diagnosis may be difficult, especially if ictal EEG is normal. We report the utility of EEG-EMG coherence analysis to confirm the epileptic nature of these spells in a patient with a minor pre-rolandic stroke.

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