Triggers
Triggers do not cause seizures but provoke the onset of a seizure or cause a seizure in a patient whose epilepsy is under control. Alcohol consumption, hormonal changes of the menstrual cycle, sleep deprivation, flickering or flashing light, and stress can trigger a seizure in a susceptible person.
http://www.neurologychannel.com/epilepsy/causes.shtml
So please keep your Default pics where they don't flicker so quick.
Thank you
Mike S