Fig. 5. Response amplitudes of the averaged tympanic nerve responses in Neoconocephalus nebrascensis. (A) Example of the averaged responses recorded from the tympanic nerve to 12 kHz and 50 kHz sine waves (10 ms duration; 1 ms rise/fall time) of various amplitudes. Stimulus amplitudes are given relative to the threshold at each frequency. (B) Stimulus amplitude/response function of the mean response amplitudes (mean ± S.E.M., N=15 in nine animals) of N. nebrascensis during stimulation with 12 kHz and 50 kHz. Stimulus amplitudes are given relative to the threshold at both frequencies. Response amplitudes are given as arbitrary units. (C) Breadth of the first oscillations (see inset) of the averaged responses (mean ± S.E.M., N=15 in nine animals) of N. nebrascensis during stimulation with 12 kHz and 50 kHz. Stimulus amplitudes are given relative to the threshold at both frequencies.