JLE

Epileptic Disorders

MENU

Flashing lights and epileptic spasms: should we be routinely performing intermittent photic stimulation in infants? Volume 24, issue 1, February 2022

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.

Figure 2

(A) Spasms triggered by 23-Hz IPS stimulation; the box demarcates the spasm. (B) During the same routine EEG, the PCR at 23 Hz is blocked by a blue light filter.