"2001: A Space Odyssey."
"Towards the end of the movie, Dr. Dave Bowman travels though space in an extended sequence full of special effects and flashing lights," said Stoffregen. "The visuals really make viewers feel as though they're moving through space, with a disorienting stomach-in-your mouth feeling that might include nausea and dizziness."
The slow and dramatic unfolding of the severed horse head in the bed was, for many, an eye-shutting moment. "That bloody scene was horrifying," said Sheehan, noting that physical reactions could include nausea, vomiting or even fainting.