Fig. 8.

Quantification of the influence of background translation. Data refer to three different motion traces originating from behavioral experiments in which the same spatial situation (close object, distant background) was simulated. Filled symbols, Changes during the period of object fixation attributable to stopping background motion. Open symbolswith cross, Changes caused by simulating the background at infinite distance by removing its translational velocity.Open symbols, Changes caused by simulating the background more closely by increasing its translational velocity.a–h, Data analysis as described for Figure 7.n = 5 cells (a–d);n = 4 cells (e–h). Error bars indicate SEM.