Non-invasive recordings were made of short-latency auditory evoked potentials (SLAEP) in the bottlenose dolphin Tursiops truncatus produced in response to paired pulse sound stimuli (conditioning and tes stimuli) delivered through transducers in contact with the acoustic window on the lower jaw. Two types of stimulation were used: monaural (both stimuli through one transducer) and dichotic (conditioning and test stimuli delivered through different transducers, one in contact with the right acoustic window and the other in contact with the left acoustic window). The conditioning and test stimuli had the same characteristics; theinterval between them varied over the range 0.15–10 msec. During monaural stimulation, suppression of the test response was the same over the range of intervals 0.15–0.5 msec; the response was recovered on further increases in the interval. In dichotic stimulation, the most marked suppression of the test response occurred at an interval of 0.5 msec, with recovery of responses at shorter and longer intervals. Complete recovery occurred when the interval was shortened to 0.15 msec and lengthened to 2 msec. The significance of these results for the precedence effect and for dolphin biosonar is discussed.
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References
Agaeva, M. Yu. and Al’tman, Ya. A., “Echo thresholds measured in the vertical and horizontal planes,” Hum. Physiol., 34, 678–684 (2008).
Au, W. W. L., The Sonar of Dolphins, Springer, New York (1993).
Au, W. W. L. and Hastings, M. C., Principles of Marine Bioacoustics Springer, New York (2008).
Bianchi, F., Verhulst, S., and Dau, T., “Experimental evidence for a cochlear source of the precedence effect,” J. Assoc. Res. Otolaryngol., 14, 767–779 (2013).
Bibikov, N. G., “What do evoked potentials tell us about the acoustic system of the harbor porpoise?” Acoust. Physics, 50, 295–304 (2004).
Brill, R. L., “The effect of attenuating returning echolocation signals at the lower jaw of a dolphin Tursiops truncatus,” J. Acoust. Soc. Am., 89, 2851–2857 (1991).
Brill, R. L., Sevenich, M. L., Sullivan, T. J., et al., “Behavioral evidence for hearing through the lower jaw by an echolocating dolphin, Tursiops truncatus,” Marine Mammal. Sci., 4, 223–230 (1988).
Brown, A. D. and Stecker, G. C., “The precedence effect in sound localization: fusion and lateralization measures for pairs and trains of clicks lateralized by interaural time and level differences,” J. Acoust. Soc. Am., 133, 2883–2898 (2013).
Brown, A. D., Stecker, G. C., and Tollin, D. J., “The precedence effect in sound localization,” J. Assoc. Res. Otolaryngol., 16, 1–28 (2015).
Bullock, T. H., Grinnell, A. D., Ikezono, F., et al., “Electrophysiological studies of the central auditory mechanisms in cetaceans,” Z. Vergl. Physiol., 59, 117–156 (1968).
Cranford, T. W., Amundin, M., and Norris, K. S., “Functional morphology and homology in the odontocete nasal complex: implications for sound generation,” J. Morphol., 228, 223–285 (1996).
Cranford, T. W., Krysl, P., and Hildebrand, J. A., “Acoustic pathways revealed: Simulated sound transmission and reception in Cuvier’s beaked whale (Ziphius cavirostris),” Bioinspir. Biomim., 3, 1–10 (2008).
Houser, D. S., Finneran, J., Carder, D., et al., “Structural and functional imaging of bottlenose dolphin (Tursiops truncatus) cranial anatomy,” J. Exp. Biol., 207, 3657–3665 (2004).
Ketten, D. R., “Cetacean ears,” in: Hearing by Whales and Dolphins, Springer, New York (2000), pp. 43–108.
Litovsky, R. Y. and Shinn-Cunningham, D. G., “Investigation of the relationship among three common measures of the precedence: Fusion, localization dominance, and discrimination suppression,” J. Acoust. Soc. Am., 109, 346–358 (2001).
McCormick, J. G., Wever, E. G., Palin, G., and Ridgway, S. H., “Sound conduction in the dolphin ear,” J. Acoust. Soc. Am., 48, 1418–1428 (1970).
Møhl, B., Au, W. W. L., Pawloski, J., and Nachtigall, P. E., “Dolphin hearing: Relative sensitivity as a function of point of application of a contact sound source in the jaw and head region,” J. Acoust. Soc. Am., 105, 3421–3424 (1999).
Norris, K. S., “The evolution of acoustic mechanisms in odontocete cetaceans,” in: Evolution and Environment, Yale University, New Haven (1968), pp. 297–324.
Norris, K. S., “The echolocation of marine mammals,” in: The Biology of Marine Mammals, Academic, New York (1969), pp. 391–424.
Norris, K. S., “Peripheral sound processing in odontocetes,” in: Animal Sonar Systems, Plenum, New York (1980), pp. 495–509.
Popov, V. V., Nechaev, D. I., Supin, A. Ya., and Sysueva, E. V., “Forward masking in a bottlenose dolphin Tursiops truncatus: Dependence on azimuthal positions of the masker and test sources,” J. Comp. Physiol. A, 208, 605–613 (2022).
Popov, V. V., Nechaev, D. I., Supin, A. Ya., and Sysueva, E. V., “Interaural sequential masking in the dolphin auditory system,” Neurosci. Behav. Physiol., 53, No. 2, 272– 278 (2023).
Popov, V. V. and Supin, A. Ya., “Localization of the acoustic window at the dolphin’s head,” in: Sensory Abilities of Cetaceans: Laboratory and Field Evidence, Plenum, New York, (1990), pp. 417–426.
Popov, V. V., Supin, A. Ya., and Klishin, V. O., “Electrophysiological study of sound conduction in dolphins,” in: Marine Mammal Sensory Systems, Plenum, New York (1992), pp. 269–276.
Popov, V. V., Supin, A. Ya., and Klishin, V. O., “Auditory brainstem response recovery in the dolphin as revealed by double sound pulses of different frequencies,” J. Acoust. Soc. Am., 110, 2227–2233 (2001).
Schuchmann, M., Hübner, M., and Wiegrebe, L., “The absence of spatial echo suppression in the echolocating bats Megaderma lyra and Phyllostomus discolor,” J. Exp. Biol., 209, 152–157 (2006).
Seeber, B. U. and Hafter, E. R., “Failure of the precedence effect with a noise band vocoder,” J. Acoust. Soc. Am., 129, 1509–1521 (2011).
Supin, A. Ya. and Nachtigall, P. E., “Gain control in the sonar of odontocetes,” J. Comp. Physiol. A, 199, 471–478 (2013).
Supin, A. Ya., Nachtigall, P. E., and Brees, M., “Evoked-potential recovery during double click stimulation in a whale: A possibility of biosonar automatic gain control,” J. Acoust. Soc. Am., 121, 618–625 (2007).
Supin, A. Ya. and Popov, V. V., “Temporal resolution in the dolphin’s auditory system revealed by double-click evoked potential study,” J. Acoust. Soc. Am., 97, 2586–2593 (1995).
Supin, A. Ya., Popov, V. V., and Mass, A. M., The Sensory Physiology of Aquatic Mammals, Kluwer, Boston (2001).
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Translated from Sensornye Sistemy, Vol. 37, No. 2, pp. 162–170, April–June, 2023.
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Supin, A.Y., Sysueva, E.V., Nechaev, D.I. et al. Forward Masking of Auditory Evoked Potentials in Dolphins in Monaural and Dichotic Sound Stimulation: Implications for the Precedence Effect and Biosonar. Neurosci Behav Physi 54, 157–163 (2024). https://doi.org/10.1007/s11055-024-01578-x
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DOI: https://doi.org/10.1007/s11055-024-01578-x