Fig. 3.

Turns induced by jumps of the edge. (A) Plots of turn-size against feeder-angle before turn with linear fits to the data (r² feeder at edge = 0.865; r² feeder inset = 0.928). (B) Plots of initial turn-speed against feeder-angle before turn with linear fits to the data (r² feeder at base = 0.898; r² feeder inset = 0.919). (C) Delay between edge-jump and turn combining all tests. Turns with delays beyond the dashed line at ∼2 SD were not analyzed. (D) For routes with inset feeder, mean and SD of edge-angle after turn are plotted against distance from screen at onset of turn. The solid line shows calculated edge-angle for 0° feeder-angle.