Figure 8. Average width of IPI distributions.
Fish discharged greater variety of IPIs (wider distributions) during the stimuli sessions compared to the control sessions, medians were 3.2 ms and 2.86 ms for the real and random IPI sessions and 2.43 ms, 2.13 ms and 2.04 ms for control session 1, 3 and 2 respectively. Between the stimuli sessions, the average width of the IPI distributions for the real IPI sessions were wider (Wilcoxon p<0.05). For the control sessions (Friedman p<0.05), post-hoc analyzes revealed that control 1 was statistically different than control sessions 2 and 3. The width of the distribution were calculated as the 2–98 percentile measure in 40s sliding windows.