Figure 8
From: Big brown bats are challenged by acoustically-guided flights through a circular tunnel of hoops
(a) Histograms showing the distribution of IPIs for the chain and hoop flights from Fig. 7. Mean IPIs in hoop flights are significantly shorter than those in chain flights. For chain flights, the bimodal distribution (with peaks at 20–25 ms and 50 ms) reflects alternating short and long IPIs, characteristic of doublet sonar sound groups. For hoop flights, the shift from a clear second peak at 50 ms to a single broader peak at 20–30 ms reflects multiple shorter IPIs for triplet and quadruplet sonar sound groups. (b) Histograms for the distributions of the ratio between the IPI after each pulse (post-IPI) and the IPI before each pulse (pre-IPI) in both the chain flights and hoop flights.
