Once again, each condition was repeated three times for each of the ten subjects taking part in the experiment. Due to the lack of space in this short report, we report only the onset time data here and not the subjective ratings. The results from Experiment 1 are illustrated in Figure 2. For both rotational and translational displays there are shorter onset times when the foreground frame is present. Note that in all the above cases shorter onset times implies earlier and stronger vection.
Vertical bars represent one standard error of the mean.
Figures 3 and 4 illustrate the results from the second experiment. We found that a stereo display shortens vection onset times in all cases and that translational displays have faster onsets times than rotational. Results also show that if subjects moved while viewing the display, the onset was slower. Overall, our results suggest that it is relatively easy to induce the perception of self motion over the course of a few seconds. A major advantage of this is the ability to give observers the sense that they have moved through a virtual space.