Acoustic features of control rumbles and 6 vocalization playback stimuli, and behavioral responses to playbacks.

aNon-linear phenomena (NLP; See Materials and Methods) is a dichotomous variable (YES = present; NO = absent).
bVIG: Average rate of vigilance behavior (per min) in response to vocal playback stimulus.
cDIS: Average distance moved (m) in response to vocal playback stimulus.
dValues in bold are greater than +1 SEM of the pre-stimulus control rumble values.
eFor further details on these playback stimuli, see [23].