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Fig. 2. (A–D) Mean psychometric functions for all bats for the time-variant
peak detection for the tested modulation rates (MR) of 2, 4, 8 and 16 Hz,
respectively. Plotted are percent correct decisions as a function of the
modulation depths; the significant threshold level was set to 75%. Each panel
depicts the psychometrics curves for all animals as a function of modulation
depth. The threshold is calculated as a mean value for all bats.