a motion - coupled visual environment prevents , reduces and / or treats motion sickness by sensing inertial motion and providing a corresponding evocative image for a subject to view , inertial sensors may include accelerometers , gyroscopes or a variety of other different sensor types . a cross - coupling algorithm may be used to cross couple different sensed inertial motions . a variety of mapping schemes may be used to map sensed inertial motion to corresponding motion within the evocative scene displayed on the display . driver - centric , passenger - centric and simulation surround systems are possible . applications include reducing motion sickness on passenger vehicles such as airplanes , trains and cars ; on military vehicles such as ships , airplanes , helicopters and the like ; and reducing “ cybersickness ” in the context of simulations on moving platforms .