What can stimulate photosensitive seizures?
Certain flashing lights, images, and repetitive patterns may cause seizures in persons with photosensitive seizure disorder. Strobe lights, flicker of bright light through leaves, and sunlight flashing off of a series of windows are examples of known stimuli. Some people are known to be affected by the raster rate of cathode ray tube televisions, especially in Europe, where the standard is 50 Hz. Video content, whether on television, film, in computer games, or on the web, may include unsafe flicker, colors, or high-contrast patterns that induce seizure. For example, in 1997 a Pokémon episode broadcast in Japan showed a sequence of flickering images which triggered seizures in hundreds of children.
