Frequency-Selectivity of the Auditory System in the Bottlenose Dolphin, Tursiops Truncatus
The auditory system of Cetaceans is characterized by a number of unique features. One important characteristic of the auditory system, used for fine discrimination of sound images, is the frequency selectivity of the auditory channels (filters). In the past years, attempts were made to measure the pass bands of the auditory filters (critical bands) in dolphins. These measurement were carried-out by the tone-tone and noise-tone masking (Johnson, 1968; Moore and Au, 1983). These studies were conducted using behavioral methods with specially trained animals. The complexity and time-consuming task of the behavioral method limits the number of subjects that can be measured, so accessible data are limited.
KeywordsAuditory System Pass Band Auditory Brainstem Response Bottlenose Dolphin Evoke Potential
Unable to display preview. Download preview PDF.
- Popov V. V. and Supin A. Ya., 1984, Measurements of frequency resolving power of human’s hearing (in Russ.). Dokl. Acad. Nauk SSSR, 278: 1012–1016.Google Scholar
- Popov V. V. and Supin A. Ya., 1985, Determination of characteristics of the dolphin’s hearing with the brain stem evoked potentials (in Russ.). Dokl. Acad. Nauk SSSR, 283: 496–499.Google Scholar
- Popov V. V. and Supin A. Ya., 1986, Evoked potentials of the dolphin’s cerebral cortex recorded from the body surface (in Russ.). Dokl. Acad. Nauk SSSR, 288: 756–759.Google Scholar
- Supin A. Ya. and Popov V. V., 1985, Recovery cycles of the dolphin’s brain stem responses to paired acoustic stimuli (in Russ.). Dokl. Acad. Nauk SSSR, 283: 740–743.Google Scholar
- Supin A. Ya. and Popov V. V., 1986a, Tonal masking curves in the bottlenose dolphin (in Russ.). Dokl. Acad. Nauk SSSR, 289: 242–246.Google Scholar
- Supin A. Ya. and Popov V. V., 1986b, Determination of frequency resolving power of dolphin’s hearing by evoked potentials of the cerebral cortex, in: V. E. Sokolov (ed.), “Electrophysiology of Sensory System of Aquatic Mammals” (in Russ.), Nauka, Moscow, 106–129.Google Scholar
- Wilson J. P. and Evans E. F., 1971, Grating acuity of the ear: psychophysical and neurophysiological measures of frequency resolving power, in: “7th Int. Congr. on Acoustics”, Budapest, 397.Google Scholar