Frequency tuning of the dolphin's hearing as revealed by auditory brain-stem response with notch-noise masking.
Notch-noise masking was used to measure frequency tuning in a dolphin (Tursiops truncatus) in a simultaneous-masking paradigm in conjunction with auditory brain-stem evoked potential recording. Measurements were made at probe frequencies of 64, 76, 90, and 108 kHz. The data were analyzed by fitting the rounded-exponent model of the auditory filters to the experimental data. The fitting parameter values corresponded to the filter tuning as follows: QER (center frequency divided by equivalent rectangular bandwidths) of 35 to 36.5 and Q10 dB of 18 to 19 at all tested frequencies.
Popov
V V
VV
Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia.
Supin
A Y
AY
Klishin
V O
VO
D000161:Acoustic Stimulation; D000818:Animals; D004289:Dolphins / Q000502:physiology*; D016057:Evoked Potentials, Auditory, Brain Stem; D005260:Female; D006309:Hearing / Q000502:physiology*; D008954:Models, Biological; D009622:Noise; D010470:Perceptual Masking