Investigation of Effect of Landscape Flow on Evaluation of Mental Workload by Vestibulo-Ocular Reflex Using VR Driving Simulator
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20219020
- Paper/Info type
- Other International Conferences
- Pages
- 1-3(Total 3 p)
- Date of publication
- Sep 2021
- Publisher
- JSAE
- Language
- English
Detailed Information
| Author(E) | 1) Tomoki Kobayashi, 2) Yuki Sato, 3) Takahiro Wada |
|---|---|
| Affiliation(E) | 1) Ritsumeikan University, 2) Nara Institute of Science and Technology, 3) Nara Institute of Science and Technology |
| Abstract(E) | Human error is one of the major causes of traffic accidents. The mental workload (MWL) influences human error. The use of the vestibulo-ocular reflex (VOR), which occurs in the opposite direction of a head movement, has been proposed as a method to evaluate the MWL. Changes in the MWL can be evaluated by the VOR in laboratory experiments, where subjects only gaze at a fixed viewpoint, and in actual vehicle experiments. However, these studies have not clarified how the real vehicle visual environment, which may produce eye movements other than VOR (e.g., optokinetic reflex due to the passing of scenery), affects the evaluation of the MWL by the VOR. Therefore, in this study, we constructed a virtual reality driving simulator that can provide a real vehicle visual environment to clarify how landscape flow while driving affects the evaluation of the MWL by the VOR. In the experiment, we measured the VOR during a mental task in two different visual environments: one with only a fixed viewpoint in the driving course, and the other with trees lining both sides of the course. We then evaluated the VOR gain values calculated from the ratio of the angular velocities of the eye and head. The results showed that the VOR gain value was significantly lower for the tree-lined visual environment. The mental task significantly reduced the VOR gain value when the visual environment was a fixed viewpoint, but not when the visual environment was lined by trees. These results suggest that the complexity of visual information, such as the flow of the landscape due to the lined trees, may reduce the VOR gain value, making it difficult to evaluate the MWL with the VOR. |
