Fig. 1From: Real-time prediction of short-timescale fluctuations in cognitive workloadTask display with seven UAVs. Hovering the mouse over a UAV displays the fuel gauge which shows that the fuel level (yellow bar) is not yet in the green region where it can be refueled. The time remaining in the block is displayed at the top, the difficulty at the bottom left, and the score at the bottom right of the screenBack to article page