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Fig. 4. Mean and standard error of time spent calling in response to each playback
stimulus during the three testing blocks (A-C). Horizontal lines indicate
which columns are significantly different (P<0.05, RM-ANOVA,
Fisher's PLSD). (A) The response to the fastest intermediate stimulus (98 ms
ICI) was significantly greater than the response to the ticking stimuli (219
ms ICI) presented during the same block. (B) Calling to the middle
intermediate stimulus (120 ms ICI) was not significantly different from
calling to the other two stimuli presented on the same nights (219 and 180 ms
ICI). (C) The slowest intermediate stimulus (160 ms ICI) elicited calling that
was significantly lower than calling to rapping stimuli (81 ms ICI) heard on
the same nights.