姿勢制御と知覚に対する広視野刺激の傾きの影響

抄録

It has been said that the static or dynamic tilt of large-visual-stimulus produces the perception of observer’s tilt, and that this misperception would cause the postural sway. But it has been shown that the reaction time of postural control was shorter than that of vection. The present study compared the effects of large-visual-stimulus on postural control and perceptual responses. A photo slide was projected onto a large hemispheric screen and tilted. Participants responded the perceived self and stimulus tilts in degree, and their body sways were measured. The results showed that the large-visual-stimulus tilt affected postural control and the effect changed with time, however, on the perceived self and stimulus tilts, it didn’t show clear effects or differences between timings of responses. It was suggested that the misperception wouldn’t always cause the biases of motor control, and that visual information pathways might be different according to what people do.