Quantitative Analysis of Motion Sickness by Electrodermogram and other Biological Signals

为了建立一种运动病的定量评估方法，记录了运动病时的生理信号。13名正常受试者接受Coriolis十字交叉旋转(全身连续水平旋转时的正弦垂直旋转)，时间长达20分钟。在额叶(阳极)和耳垂(Cat6hode)之间记录电信号(EDG)。连续采集潮气，测量呼吸周期和肺内二氧化碳浓度。受试者每分钟用sbsolte判断法评估晕动病的严重程度。热出汗区域的EDG(即额头)，在正常情况下为负极化，在晕动病时为去极化。呼吸周期平均变化不大，但ts方差增大。潮气内CO_2浓度显著降低。EDG去极化和内耳CO_2浓度下降与运动病的严重程度显著相关

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