JLE

Epileptic Disorders

MENU

GEFS + where focal seizures evolve from generalized spike wave: video-EEG study of two children Volume 9, numéro 3, September 2007

Figure 1 Pedigree of case 1.

Figure 2 Case 1. Interictal EEG showing diffuse slowing with almost continual rhythmic 2-4 Hz delta over the left hemisphere maximal in the temporal region. Bursts of irregular posteriorly predominant fast 4-5 Hz GSW and GPSW are shown.

Figure 3 A. Case 1. Ictal EEG for seizure with head deviation to the right. The seizure began with 2 seconds of irregular GPSW activity (20:44:06), preceded by one second of left posterior temporal rhythmic theta. GPSW was followed by 1.5 second generalized attenuation, then a burst of irregular GSW evolving to a focal fast rhythm in the left posterior quadrant (20:44:11, maximal O1, P3, T5); B. Case 1. Ictal EEG for seizure with head deviation to the right. Ongoing focal fast rhythm in left posterior quadrant seen at 20:44:13 continues until 20:47:09.

Figure 4 A. Case 1. Ictal EEG for seizure with head deviation to the left. The seizure began with GSW (11:11:25) predominating over the right hemisphere; B. Case 1. Ictal EEG for seizure with head deviation to the left. At 11:11:35, a fast ictal rhythm emerged over the right posterior quadrant (T6, O2, P4) superimposed on diffuse rhythmic 3-4Hz slowing.

Figure 5 Case 2. Ictal EEG. The ictal recording began with a sharp slow complex (14:25:44) in the right posterior quadrant (T6, O2), immediately followed by GSW with a right hemisphere predominance. At 14:25:48, sharply contoured 6Hz theta rhythm emerged at O2 and was reflected over the left posterior quadrant.