PMC7744758_01
PMC7744758_02
PMC7744758_03
PMC7744758_04
Representative EEG from Case 2 during the PS period. Sleep record at 5 years 9 months old. Upon medication with valproic acid. Frequent spike-and-waves are seen in the left occipital region.
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F1
No subsequent seizures appeared, but left occipital spike-and-wave discharges persisted for a long time (Figure 1).
PMC7744758_05
PMC7744758_06
PMC7744758_07
Interictal EEG from Case 4 when JME developed. Awake record at 12 years 7 months old, on no medication. Generalized polyspikes-and-waves are apparent.
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F2
EEG revealed frequent generalized polyspike-and-wave discharges (Figure 2) and photoparoxysmal responses.