TITLE:
Evaluation of Driver Distraction with Changes in Gaze Direction Based on a Vestibulo-Ocular Reflex Model
AUTHORS:
Le Anh Son, Hirofumi Aoki, Tatsuya Suzuki
KEYWORDS:
Vestibulo-Ocular Reflex Model (VOR), Optokinetic Reflex (VOR), Mental Workload, Drive Distraction
JOURNAL NAME:
Journal of Transportation Technologies,
Vol.7 No.3,
July
24,
2017
ABSTRACT: With the aim of improving parameter identification and, eventually, evaluating driver distraction with changes in gaze direction, we applied a genetic algorithm (GA) method to identify parameters for an existing vestibulo-ocular reflex (VOR) model. By changing the initial inputs to the GA and fixing two parameters pertaining to the horizontal direction, we achieved improved parameter identification with a lower mean-square error. The influence of driver distraction on eye movement with changes in gaze direction was evaluated from the difference between the predicted and observed VOR in the vertical axis. When a driver was given an additional mental workload, the mean-square error between the measured and simulated values was bigger than that in the absence of the mental workload. This confirmed the relationship between driver distraction and eye movement in the vertical direction. We hope that this method can be applied in evaluating driver distraction.