Fig. 6. Saccade metrics [rows: (i) duration, (ii) amplitude and (iii) peak velocity] are affected by stimulus parameters (columns A-E). The red numbers equal the reduction in uncertainty about the value of each metric given knowledge of that stimulus parameter. The bottom row (iv) shows the relative probability of observing each value of the stimulus parameters. The broken line in Aiv shows the spontaneous saccade probability. Values are means ± s.e.m.; N=35 flies; n=2933 saccades.