Date of Award
Master of Science (MS)
This study examined the utility of eye-tracking as a control method during tele-operation in a simulated task environment. Operators used a simulator to tele-operate a search robot using three different control methods: fully manual, hybrid, and eye-only. Using Endsely’s (1995a) three level SA model and a natural interface (e.g., eye-tracking) as a more user-centered approach to tele-operation, the study measured objective, electroencephalogram, and subjective (NASA-TLX) measures to reflect both workload and situation awareness during tele-operation. The results showed a significant reduction in mental workload, as reflected by EEG measures. However a significant effect was found where the operators’ perceived mental workload scores, as reflected by the TLX, significantly increased while using the natural interface. The difference in perceived mental workload was also mirrored by a post hoc analysis where frustration scores, also reflected by the TLX, supported the initial findings of the differences in perceived mental workload scores between the three conditions. The results of this study can be explained by both incomplete mental models of motor movements and differences in affordances offered by the different control conditions. Additional considerations for system designers and future research are also discussed.
Levy, Jeffrey Neal, "Eye Tracking as a Control Interface for Tele-Operation During a Visual Search Task" (2017). Psychology Theses & Dissertations. 49.