Cybersickness is caused by seeing movements, such as a rapid-pace scene of an action film, without actually feeling those motions. This maladjustment runs counter to traditional motion sickness, when one feels movement in the body and inner ear, but does not see it ‒ for example, on the deck of a ship sailing at sea. Fixating on the horizon can often reconcile the mismatch.

“Your sense of balance is different than other senses in that it has lots of inputs,” said Steven Rauch, medical director of the Massachusetts Eye and Ear Balance and Vestibular Center and professor of otolaryngology at Harvard Medical School, according to New York Times.

“When those inputs don’t agree, that’s when you feel dizziness and nausea,” Rauch said.

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