Quantitative Analysis of Motion Sickness by Electrodermogram and other Biological Signals

为了建立运动病的定量评价方法，记录了运动病过程中的生理信号。13名正常受试者进行了长达20分钟的Coriolis交叉耦合旋转（全身连续水平旋转期间的正弦垂直旋转）。在前额（阳极）和耳垂（导管）之间进行EDG。连续采样潮气，测定呼吸周期和潮内CO_2浓度。受试者每分钟用单项判断法对运动病的严重程度进行评估。热出汗区域的EDG（即前额），在正常情况下负极化，去极化运动病。平均呼吸周期无变化，但方差增大。潮气内CO_2浓度明显降低。EDG的去极化程度和CO_2浓度的降低与运动病的严重程度呈显著相关

In order to develop a quantitative evaluation method for motion sickness, physiological signals were recorded during motion sickness. Thirteen normal subjects were provided with Coriolis cross-cupled rotation (sinusoidal vertical rotation during continuous horizontal rotation of the whole body) for up to 20 minutes. Electrodermogram (EDG) was recrded between the forehead (anode) and the ear lobe (cat6hode). Tidal air was continuously sampled, and respiratory periods and endotidal CO_2 concentrtion were measred. The severity of motion sickness was evauated by the subjects every minute by means of the sbsolute judgment method. EDG in the thermal sweating area (i .e. Forehead), which negatively polarized in the normal condition, depolarized during motion sickness. Respiratory period did not change in average, but ts variance enlarged. Endotidal CO_2 concetration remarkably diminished. The depolarization of EDG and the drop of endotidal CO_2 concentration were significantly correlated with the severity of motion sickness