Figure 4.

Experiment 1: Distribution of first U-turns in a flat channel on a homebound run. The point of release was at 0 m. Dashed line: expected position of the nest. Dotted lines: positions of ramps in the preceding training situations. The distribution of U-turns differed between Λ and all other training paradigms (p < 0.001), and between flat training and training with ramp position at 9 m from the nest (p < 0.05; Kruskal-Wallis H-test and Games-Howell post-hoc test for pair-wise comparisons).