Fig. 7. DCMD responses to 17 consecutive approaches of a `locust' (black) or `bird' (red) at 4 s intervals. Approach 16 is the same object approaching along a different trajectory. (A) Sample raster plots of the right DCMD to 17 approaches of a `locust' and `bird' showing a stronger response to approach 16 (arrows). In this example approaches 1–15 and 17 are from 0° azimuth and approach 16 is from +45° azimuth. (Bi–iii) Data (N=11) were plotted as in Fig. 5 except that the curve was fit for approaches 1–15. For clarity the S.D. is shown in only one direction.