Fig. 7.

Changing vocalization behaviors during approach toward S− during inspection and correct rejection of S− prior to eventual tapping of S+ in 23 trials (452 total vocalizations). a Pulse interval (onset to onset) between each vocalization and its preceding vocalization. b Duration measured as the difference between the beginning and end of the fundamental sweep. c Bandwidth measured as the difference between the start and end frequency of the fundamental sweep. d Sweep rate measured as the ratio of bandwidth to duration. The last inspection of S− before the bat passed S− or directed its beam axis elsewhere has been aligned to time 0 and is indicated by a vertical gray line