This project investigated the effects of compromised stereo vision and fatigue on performance of tasks in virtual reality (used to mimic augmented reality).
The project team developed a methodology to quantify how compromised stereo vision might impact performance for AR based tasks, when rested and under fatigue. This included continuous measurement of behaviour including eye movements and performance on cognitive tasks.
The results indicate that compromised stereo under fatigue does impact performance. Participants with low stereo showed systematic differences compared to those with “normal” stereo. Participants with low stereo had lower Subjective Sleep Quality ratings under fatigue, lower workload and more variable eye movement metrics. Interestingly, they also responded differently to fatigue for target detection during different modes of control.
More work is needed to understand how compromised stereo impacts performance and how it changes over time.
Further work could also be undertaken to develop a working prototype of a HMI that could be re-configured depending on the operator’s capabilities (for example, under fatigue and/or compromised stereo) and demands of the environment.