Short-latency auditory brainstem evoked potentials (ABR) to paired sound pulses (the conditioning and test stimuli) were
recorded non-invasively in a bottlenose dolphin Tursiops truncatus. The stimuli were played through transducers
contacting the left and right acoustic windows at the lower jaw. Two manners of stimulation were used: monaural (the
both stimuli played through one and the same transducer) and dichotic (the conditioning and test stimuli played through
different transducers, contacting the left and right acoustic window). Thе conditioning and test stimuli were equal in
level and duration. The inter-stimulus delay varied from 0.15 to 10 ms. At the monaural stimulation, the suppression of
the test stimulus was constant at interstimulus intervals from 0.15 to 0.5 ms; at longer intervals, the test response
recovered. At the dichotic stimulation, the deepest suppression of the test response appeared at an interval of 0.5 ms;
the test response recovered at both shorter and longer intervals. The complete recovery appeared at intervals as short
as 0.15 ms and as long as 2 ms. Implications of the found regularities for the preceding effect and biosonar is
discussed.
Key words:
dolphin, preceding effect, masking, echolocation
DOI: 10.31857/S0235009223020051
EDN: QTARLN
Cite:
Supin A. Ya., Sysueva E. V., Nechaev D. I., Tarakanov M. B., Popov V. V.
Posledovatelnaya maskirovka slukhovykh vyzvannykh potentsialov u delfina pri monauralnoi i dikhoticheskoi zvukovoi stimulyatsii: znachenie dlya effekta predshestvovaniya i biosonara
[Forward masking of the auditory evoked potentials in a dolphin at monaural and dichotic auditory stimulation: implications for the preceding effect and biosonar].
Sensornye sistemy [Sensory systems].
2023.
V. 37(2).
P. 162–170 (in Russian). doi: 10.31857/S0235009223020051
References:
- Agaeva M.Yu., Al’tman Ya.A. Echo thresholds measured in the vertical and horizontal planes. Human Physiol. 2008. V. 34. P. 678–684.
- Au W.W.L. The Sonar of Dolphins. New York: Springer, 1993. P. 227.
- Au W.W.L., Hastings M. C. Principles of Marine Bioacoustics. New York: Springer, 2008. P. 679.
- Bianchi F., Verhulst S., Dau T. Experimental evidence for a cochlear source of the precedence effect. J. Assoc. Res. Otolaryngol. 2013. V. 14. P. 767–779.
- Bibikov N.G. What do evoked potentials tell us about the acoustic system of the harbor porpoise? Acoust. Physics. 2004. V. 50. P. 295–304.
- Brill R.L. The effect of attenuating returning echolocation signals at the lower jaw of a dolphin Tursiops truncatus. J. Acoust. Soc. Am. 1991. V. 89. P. 2851–2857.
- Brill R.L., Sevenich M.L., Sullivan T.J., Sustman J.D., Witt R.E. Behavioral evidence for hearing through the lower jaw by an echolocating dolphin, Tursiops truncatus. Marine Mammal Sci. 1988. V. 4. P. 223–230.
- Brown A.D., 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. 2013. V. 133. P. 2883–2898.
- Brown A.D., Stecker G.C., Tollin D.J. The precedence effect in sound localization. J. Assoc. Res. Otolaryngol. 2015. V. 16: P. 1–28.
- Bullock T.H., Grinnell A.D., Ikezono F., Kameda K., Katsuki Y., Nomoto M., Sato O., Suga N., Yanagisava K. Electrophysiological studies of the central auditory mechanisms in cetaceans. Z. Vergl. Physiol. 1968. V. 59. P. 117–156.
- Cranford T.W., Amundin M., Norris K.S. Functional morphology and homology in the odontocete nasal complex: implications for sound generation. J. Morphol. 1996. V. 228. P. 223–285.
- Cranford T.W., Krysl P., Hildebrand J. A. Acoustic pathways revealed: Simulated sound transmission and reception in Cuvier’s beaked whale (Ziphius cavirostris). Bioinspir. Biomim. 2008. V. 3. P. 1–10.
- Houser D.S., Finneran. J., Carder. D., Van Bonn W., Smith C., Hof C., Mattrey R., Ridgway S. Structural and functional imaging of bottlenose dolphin (Tursiops truncatus) cranial anatomy. J. Exp. Biol. 2004. V. 207. P. 3657–3665.
- Ketten D.R. Cetacean ears. Hearing by Whales and Dolphins. New York, Springer. 2000. P. 43–108.
- Litovsky R.Y., 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. 2001. V. 109. P. 346–358.
- McCormick J.G., Wever E.G., Palin G., Ridgway S.H. Sound conduction in the dolphin ear. J. Acoust. Soc. Am. 1970. V. 48. P. 1418–1428.
- Møhl B., Au W.W.L., Pawloski J., 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. 1999. V. 105. P. 3421–3424.
- Norris K.S. The evolution of acoustic mechanisms in odontocete cetaceans. Evolution and Environment. Yale University, New Haven. 1968. P. 297–324.
- Norris K.S. The echolocation of marine mammals. The Biology of Marine Mammals. Academic, New York. 1969. P. 391–424.
- Norris K.S. Peripheral sound processing in odontocetes. Ed Animal Sonar System.Plenum, New York. 1980. P. 495–509.
- Popov V.V., Nechaev D.I., Supin A.Ya., 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. 2022. V. 208. P. 605–613.
- Popov V.V., Nechaev D.I., Supin A.Ya., Sysueva E.V. Interaural sequential masking in the dolphin auditory system. Neurosci. Behav. Physiol. 2023. V. 53 (2). P. 272–278.
- Popov V.V., Supin A.Ya. Localization of the acoustic window at the dolphin’s head. Sensory Abilities of Cetaceans: Laboratory and Field Evidence. Plenum, New York. 1990. P. 417–426.
- Popov V.V., Supin A.Ya., Klishin V.O. Electrophysiological study of sound conduction in dolphins. Marine Mammal Sensory Systems. Plenum, New York. 1992. P. 269–276.
- Popov V.V., Supin A.Ya., Klishin V.O. Auditory brainstem response recovery in the dolphin as revealed by double sound pulses of different frequencies. J. Acoust. Soc. Am. 2001. V. 110. P. 2227–2233.
- Schuchmann M., Hübner M. Wiegrebe L. The absence of spatial echo suppression in the echolocating bats Megader ma lyra and Phyllostomus discolor. J. exp. Biol. 2006. V. 209. P. 152–157.
- Seeber B.U., Hafter E.R. Failure of the precedence effect with a noise band vocoder. J. Acoust. Soc. Amer. 2011. V. 129. P. 1509–1521.
- Supin A.Ya., Nachtigall P.E. Gain control in the sonar of odontocetes. J. comp. Physiol. A. 2013.V. 199. P. 471–478.
- Supin A.Ya., Nachtigall P.E., Brees M. Evoked-potential recovery during double click stimulation in a whale: A possibility of biosonar automatic gain control. J. Acoust. Soc. Am. 2007. V. 121. P. 618–625.
- Supin A.Ya., Popov V.V. Temporal resolution in the dolphin’s auditory system revealed by double-click evoked potential study. J. Acoust.Soc. Am. 1995. V. 97. P. 2586–2593.
- Supin A.Ya., Popov V.V., Mass A.M. The Sensory Physiology of Aquatic Mammals. Boston: Kluwer, 2001. P. 332.
