BACKGROUND Motion sickness may reduce passenger comfort and crew performance. Countermeasures are dominated by medication with specific and often undesirable side effects. OBJECTIVE To shown that sickness due to motion can be reduced by adding an inherent non-sickening vibration and by mental distraction. METHODS Eighteen blindfolded subjects were exposed to 20 minutes of off-vertical axis ...

A method is proposed by which the incidence of motion sickness may be predicted from measurement of the motion exposure. The method is based on data from both field and laboratory studies involving large numbers of people and is applicable to marine and other environments where vertical oscillation occurs at frequencies below 0.5 Hz. The dependence of motion sickness on the frequency of oscilla...

Two flight students, grounded for the reason they were highly susceptible to motion sickness, completed their training after gradually adapting to 10 rpm, achieved by executing head movements during small stepwise increases in angular velocity. Subject 1 executed a total of about 77 000 head movements with a period of 5 months and Subject 2 executed about 108 000 head movements within a period ...