7th Annual Meeting of the International Multisensory Research Forum
    Home > Papers > Bernhard E. Riecke
Bernhard E. Riecke

Visually induced linear vection is enhanced by small physical accelerations
Single Paper Presentation

Bernhard E. Riecke
Max Planck Institute for Biological Cybernetics, Tübingen, Germany

Franck Caniard
Max Planck Institute for Biological Cybernetics, Tübingen, Germany

Jörg Schulte-Pelkum
Max Planck Institute for Biological Cybernetics, Tübingen, Germany

     Abstract ID Number: 96
     Full text: Not available
     Last modified: March 17, 2006
     Presentation date: 06/18/2006 4:00 PM in Hamilton Building, Foyer
     (View Schedule)

Abstract
Wong & Frost (1981) showed that the onset latency of visually induced self-rotation illusions (circular vection) can be reduced by concomitant small physical motions (jerks).
Here, we tested whether (a) such facilitation also applies for translations, and (b) whether the strength of the jerk (degree of visuo-vestibular cue conflict) matters.
14 naïve observers rated onset, intensity, and convincingness of forward linear vection induced by photorealistic visual stimuli of a street of houses presented on a projection screen (FOV: 75°×58°). For 2/3 of the trials, brief physical forward accelerations (jerks applied using a Stewart motion platform) accompanied the visual motion onset.
Adding jerks enhanced vection significantly; Onset latency was reduced by 50%, convincingness and intensity ratings increased by more than 60%.
Effect size was independent of visual acceleration (1.2 and 12m/s^2) and jerk size (about 0.8 and 1.6m/s^2 at participants’ head for 1 and 3cm displacement, respectively), and showed no interactions.
Thus, quantitative matching between the visual and physical acceleration profiles might not be as critical as often believed as long as they match qualitatively and are temporally synchronized.
These findings could be employed for improving the convincingness and effectiveness of low-cost simulators without the need for expensive, large motion platforms.

Research
Support Tool
  For this 
refereed conference abstract
Capture Cite
View Metadata
Printer Friendly
Context
Author Bio
Define Terms
Related Studies
Media Reports
Google Search
Action
Email Author
Email Others
Add to Portfolio



    Learn more
    about this
    publishing
    project...


Public Knowledge

 
Open Access Research
home | overview | program
papers | organization | schedule | links
  Top