Bucha effect

The Bucha effect is a seizure-inducing effect of light flashing at 1 Hzto 20 Hz, similar to epilepsybut not restricted to people with histories of epilepsy.

It is named after a Dr. Bucha who identified the phenomenon in the 1950swhen called upon to investigate a series of similar and unexplained helicoptercrashes. Those pilots who had survived reported sudden onset of dizziness and confusion, causing them to lose control of their aircraft. Dr. Bucha found that helicopter rotorblades, when turning at certain speeds, could cause flashes of sunlight at frequencies coinciding with the electrical frequencies of the central nervous system (brainwaves), inducing symptoms similar to epilepticseizures, including disorientation, nausia, etc.

The Bucha effect has been considered as a principle for various forms of non-lethal weapon.

See also

• Strobe light
• Photosensitive epilepsy

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It uses material from the http://en.wikipedia.org/wiki/Bucha+effect Wikipedia article Bucha effect.