Fig. 6. Experiment 3 was performed in an identical environment as Experiment 2 except the distance between columns was increased to 10 m and r₀ to 2 m. (A) The numbers of rewards (hits) per 10 min run increased over the course of 5 days (ANOVA, F_4,11=7.3, P<0.0001; post-hoc test, NS, non significant; ^*P<0.05; ^**P<0.01; ^***P<0.001; N=12). (B) The numbers of hits per 10 m distance run increased over time (ANOVA, F_4,11=5.37, P<0.002; post-hoc test, NS, non significant, ^*P<0.05; ^**P<0.01). The maximum achievable number of hits per 10 m was 1, animals reached 0.644. (C) The average trace length per 10 min increased a bit over 5 days, the animals were trained in Experiment 1. (D) The inter-individual variation of the trace length, averaged over all 5 days, versus the animal number.