Vv. Popov et al., FREQUENCY TUNING CURVES OF THE DOLPHINS HEARING - ENVELOPE-FOLLOWING RESPONSE STUDY, Journal of comparative physiology. A, Sensory, neural, and behavioral physiology, 178(4), 1996, pp. 571-578
Simultaneous tone-tone masking in conjunction with the envelope-follow
ing response (EFR) recording was used to obtain tuning curves in dolph
ins (Tursiops truncatus). The EFR was evoked by amplitude-modulated pr
obes of various frequencies. A modulation rate of 600 Hz was found to
fit the requirement to have a narrow spectrum and evoke EFR of large a
mplitude. Tuning curves were obtained within the frequency range from
11.2 to 110 kHz. The Q(10) values of the obtained tuning curves varied
from 12-14 at the 11.2 kHz center frequency to 17-20 at the 64-90 kHz
frequencies.