@inproceedings{HarrisHerpersJenkinetal.2010, author = {Laurence Roy Harris and Rainer Herpers and Michael Jenkin and Bill Kapralos and Heather Jenkin and David Scherfgen and Sandra Boronas}, title = {The perception of linear self motion induced by a virtual reality display while viewing eccentrically}, series = {11th International Multisensory Research Forum (IMRF 2010), Liverpool, UK, June 16-19, 2010}, year = {2010}, abstract = {The perceived distance of self motion induced in a stationary observer by optic flow is overestimated (Redlick et al., Vis Res. 2001 41: 213). Here we assessed how different components of translational optic flow contribute to perceived distance traveled. Subjects sat on a stationary bicycle in front of a virtual reality display that extended beyond 90deg on each side. They monocularly viewed a target presented in a virtual hallway wallpapered with stripes that changed colour to prevent tracking individual stripes. Subjects then looked centrally or 30, 60 or 90° eccentrically while their view was restricted to an ellipse with faded edges (25 x 42deg) centered on their fixation. Subjects judged when they had reached the target’s remembered position. Perceptual gain (perceived/actual distance traveled) was highest when subjects were looking in a direction that depended on the simulated speed of motion. Results were modeled as the sum of separate mechanisms sensitive to radial and laminar optic flow. In our display distances were perceived as compressed. However, there was no correlation between perceptual compression and perceived speed of motion. These results suggest that visually induced self motion in virtual displays can be subject to large but predictable error.}, language = {en} }