Document Type
Article
Publication Date
8-1-2005
Published In
Presence: Teleoperators And Virtual Environments
Abstract
Studies of locomotion in virtual environments assume that correct geometric principles define the relationship between walking speed and environmental flow. However, we have observed that geometrically correct optic flow appears to be too slow during simulated locomotion on a treadmill. Experiment 1 documents the effect in a head-mounted display. Experiment 2 shows that the effect is eliminated when the gaze is directed downward or to the side, or when the walking speed is slow. Experiment 3 shows that the effect is unchanged by stride length. Experiment 4 verifies that the effect is not attributable to image jitter. The change in perceived speed from straight ahead to side or down gaze coincides with a shift from expanding optic flow to lamellar flow. Therefore, we hypothesize that lamellar flow is necessary for accurate speed perception, and that a limited field of view eliminates this cue during straight-ahead gaze.
Recommended Citation
T. Banton, J. Stefanucci, Frank H. Durgin, A. Fass, and D. Proffitt.
(2005).
"The Perception Of Walking Speed In A Virtual Environment".
Presence: Teleoperators And Virtual Environments.
Volume 14,
Issue 4.
394-406.
DOI: 10.1162/105474605774785262
https://works.swarthmore.edu/fac-psychology/1
Comments
This work is freely available courtesy of Massachusetts Institute of Technology Press.