Does anyone else get headaches and dizziness after playing a First Man shooter game?

I do not suffer from any condition like epilepsy or anything like that, it only happens with first man shooter games e.g. Half life, Resistance: Fall of Man. I do not suffer when playing Heavenly sword as it is a “third person” game. Can anyone explain? Thanks!
The length of time i am playing them ranges between 15mins – 1hr gameplay. That is when i suffer from headaches and dizziness. I don’t think that is a long time.

It’s rare, but it happens. It’s called simulation sickness.The most common theory for the cause of simulation sickness is that the illusion of motion created by the virtual world, combined with the absence of motion detected by the inner ear, causes the area postrema in the brain to infer that one is hallucinating and further conclude that the hallucination is due to poison ingestion. The brain responds by inducing nausea and vomiting, to clear the supposed toxin. According to this theory, simulation sickness is just another form of motion sickness. Your best bet to avoid this is to close your eyes, look out the window, or go outside to get some fresh air.

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