Fig. 8.

Measuring and modeling responses to figures moving against a moving background. (A) The figure and the ground were oscillated according to two constant-velocity triangle-wave position trajectories. (B) Average ΔWBA responses (black) when the figure was oscillated in front of or in back of the flight arena. Predictions made by convolving the combined figure STAF and ground STAF (Fig. 3) with the compound triangle-wave stimulus (orange). (C) Correlations between the figure or ground motion and the measured response (transparent bars); and correlations between the predictions made with the figure STAF, the ground STAF or both, and the measured response (solid bars). N=10 flies, 5 trials each.