Luminance effects on visual perception of self-rotation for development of driving simulator

Large-field visual stimulation with a rotating stimulus often induces the illusion of self-rotation, which is called circular vection (CV). Although CV has been extensively studied, the dependence of CV on the spatial frequency, luminance and visual-field of the visual stimulus remains unclear. In this paper, we investigated the luminance effects on visual perception of self-rotation. Fourteen young adult male volunteer subjects participated in the study. The device comprised a wide-view screen, a PC and a reaction key. The experimental stimuli were generated onto screen by PC. The sine-wave stimulus was rotated, and changed into five spatial frequencies (0.033, 0.053, 0.084, 0.130, and 0.210 cycle/deg) and six luminance conditions. The subjects reported the perceived CV velocity using the magnitude estimation method, and the latency of CV was defined as the time from the start of the stimulus to the onset of CV. These results may suggested that the CV to be more compelling when the spatial frequency from 0.053 cycle/deg to 0.084 cycle/deg and high luminance of visual stimuli in central vision field. And the CV to be faster induced when the spatial frequency approximately 0.084 cycle/deg and high luminance of visual stimuli in central vision field.