Effects of stimulus eccentricity on the perception of visually induced self-motion facilitated by simulated viewpoint jitter.

The present investigation aimed to examine the effects of stimulus eccentricity in the facilitation of vection by a jittering visual inducer. A psychophysical experiment revealed that the central region of the visual field is more critical in facilitation by perspective viewpoint jitter than the peripheral area. The results suggest that the perceptual mechanism underlying the facilitation by jitter may be different from that responsible for generating standard vection from non-jittering visual motion, because the effects of stimulus eccentricity were quite different in these two situations.