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  • Title: Electrodermal activity as an index of motion sickness.
    Author: Warwick-Evans LA, Church RE, Hancock C, Jochim D, Morris PH, Ward F.
    Journal: Aviat Space Environ Med; 1987 May; 58(5):417-23. PubMed ID: 3593144.
    Abstract:
    Sweating in the absence of thermal stimulation is one of the cardinal symptoms of motion sickness. But since sweating is closely related to electrodermal activity this may be a potentially useful index of the intensity of motion sickness. In order to evaluate this possibility, the correlations between electrodermal activity and a range of signs and symptoms of motion sickness were examined in four experiments, in which a total of 170 subjects were exposed to a cross-coupled force environment. Although increases in skin conductance did not correlate with specific single indices of motion sickness, correlations with a questionnaire based on several signs and symptoms varied from 0.89 (p less than 0.001) to 0.11 (N.S.). It is concluded that skin conductance potentially offers a valid and very precise measure of motion sickness, but that it is sensitive to extraneous factors only some of which are currently understood.
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