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Fig. 4. Intensity dependence of pulse-rate preferences in tests between standard
calls and alternatives with other pulse rates. (A) Preferences of H.
chrysoscelis; pulse-rate differences were less than those between the
standard call and alternatives at the low- and high-cutoff values in tests at
85 dB SPL with stimuli having a bimodal spectrum
(Gerhardt, 2005a). When these
data were combined with those plotted in
Fig. 3, there were highly
significant effects of pulse rate. See text for details. (B) Preferences of
H. versicolor in tests with an alternative with a lower pulse rate
(10 pulses s–1) than the low-cutoff value and with
alternatives with higher pulse rates (35 and 40 pulses s–1)
than the high-cutoff value. Error bars are 95% credible intervals.
N=number of female choices (one per female in each test).
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