Figure 1
Scalp EEG recording of Patient 10 during dyskinetic movements of the face and mouth (see table 1 and video sequence 3).
Arrows indicate clinical events (dyskinesias) registered by superficial muscle electrodes: left orbicularis oculi muscle (1) and right nuchal muscles (2, 3 and 4). At (1), no changes in EEG trace were recorded; at (2), (3) and (4), each contraction was followed by artefact without any epileptic discharge.