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Photosensitive Seizures
& TVs.
Television and electronic games are major
factors that evoke seizures. Other light sources include flickering or
reflected sunlight, lightning, car headlights, flickering artificial
lights, arcade games, disco or even simple Christmas tree lights and
sharply contrasting patterns.
Some computer games can evoke seizures. Several factors explain why
seizures occur during video games: photosensitive response to physical
characteristics of the TV display, e.g., flicker at or near the
frequency of the electrical supply; photosensitive response to the
game’s visual content; specific cognitive activities,
decision making.
Emotional factors are also a significant cause, such as anxiety or
excitement; ssleep deprivation or fatigue; and simple chance.
To minimise the risk, the viewing distance should be at least four
times the screen width. The room should be appropriately lit to avoid
glare or excessive contrast between screen and ambient room light
levels. Avoid prolonged play! Children should not play when sleep
deprived or febrile.
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