"Although there were similar parts in the episode with red and blue flashes, an anime technique called "paka paka" made this scene extremely intense, for these flashes were extremely bright strobe lights, with blinks at a rate of about 12 Hz for approximately four seconds in almost fullscreen, and then for two seconds outright fullscreen.At this point, viewers started to complain of blurred vision, headaches, dizziness and nausea. Some experienced seizures, blindness, convulsions and loss of consciousness.Japan's Fire Defense Agency reported that a total of 685 viewers, 310 boys and 375 girls, were taken to hospitals by ambulances"
http://en.wikipedia.org/wiki/Denn%C5%8D_Senshi_Porygon
"Although there were similar parts in the episode with red and blue flashes, an anime technique called "paka paka" made this scene extremely intense, for these flashes were extremely bright strobe lights, with blinks at a rate of about 12 Hz for approximately four seconds in almost fullscreen, and then for two seconds outright fullscreen.At this point, viewers started to complain of blurred vision, headaches, dizziness and nausea. Some experienced seizures, blindness, convulsions and loss of consciousness.Japan's Fire Defense Agency reported that a total of 685 viewers, 310 boys and 375 girls, were taken to hospitals by ambulances"
Sounds lethal