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Visually induced self-motion perception (vection) arises with a latency period of several seconds. It was tested whether the sense of self-motion induced by an optical flow remained when the direction of the optical flow changed to a new one. Measurements of the latency period for vection in the new direction showed that the latency period was only 15% shorter than that for the first vection. The shortening can be explained partly by the fact that the visual patterns preceding the second flow were dynamic. It was concluded that vection was lost when the direction.of the flow changed, and that vection in a new direction requires a new latency period.