Figure 1
Representative EEGs of intermittent photic stimulation triggering paroxysmal photic convulsions (electroclinical epileptic spasms demarcated by boxes) and paroxysmal photic responses. (A) Spasms triggered by 12, 17 and 30-Hz stimulation. (B) Spasms triggered at 1 and 5-Hz stimulation. (C) IPS performed while the patient was asleep showing PPR at 12, 17 and 8 Hz without clinical spasms.