A term coined in the 1990's, referring to a sense of nausea and disorientation similar to seasickness
or car sickness
, caused by graphical lag in virtual reality
helmets, such as Virtuality
arcade systems. When turning one's head the display would lag a fraction of a second behind, resulting in a disagreement between the wearer's sense of balance and sense of sight. Cybersickness is a probable cause for much of the rapid loss of interest in immersive cyberspace and, to a lesser degree, the cyberpunk
I tried playing Dactyl Nightmare on an old Virtuality system, but it nearly made me puke from cybersickness after a couple minutes.