Fig. 5.

Effect of removing translational optic flow cues in the lateral or ventral visual fields. The tunnel was 180 cm-wide lined with the dead leaves pattern on the walls and floor (left), dead leaves pattern on the floor and grey walls (middle), or dead leaves pattern on the walls and white floor (right) (see also the tunnel sketches below each boxplot). The condition with a patterned floor and patterned walls (left) is data re-analysed from Linander et al. (2016). The plots show the within-flight variation (25–75% interquartile range) in lateral position for each condition. Boxes indicate the extent of the 25–75% interquartile range, the horizontal line indicates the median, whiskers indicate the full extent of the data and red crosses represent outliers