Journal of comparative physiology

, Volume 135, Issue 4, pp 283–290 | Cite as

TheApteronotus EOD field: Waveform and EOD field simulation

  • N. Hoshimiya
  • K. Shogen
  • T. Matsuo
  • S. Chichibu
Article

Summary

  1. 1.

    Electric organ discharges (EOD) were measured in a wave-type electric fish,Apteronotus, with an array of electrodes.

     
  2. 2.

    The EOD waveform observed in the transient area (area where the equipotential lines converged) was a triphasic one in comparison to a biphasic one in the rest of the area. Electronic circuit simulation suggested that the triphasic waveform resulted from incomplete electrocyte synchronization within the electric organ.

     
  3. 3.

    The EOD field was obtained by computer simulation using the finite-element-method. The simulated results were used for calculation of the transepidermal potential difference distribution. This distribution is discussed with respect to sensitivity differences of electroreceptors in various parts of the fish.

     

Keywords

Computer Simulation Electronic Circuit Difference Distribution Field Simulation Electric Organ 

Abbreviations

EOD

electric organ discharges

F.E.M.

finite-element-method

N.M.

neuron model

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References

  1. Bennett, M.V.L.: Electroreceptors in mormyrids. Cold Spring Harbor Symp. Quant. Biol.30, 245–262 (1965)Google Scholar
  2. Bennett, M.V.L.: Electric organs. In: Fish physiology. Hoar, W.S., Randall, D.J. (eds.), Vol. 5, pp. 347–491. New York, London: Academic Press 1971aGoogle Scholar
  3. Bennett, M.V.L.: Electroreception. In: Fish physiology. Hoar, W.S., Randall, DJ. (eds.), Vol. 5, pp. 493–574. New York, London: Academic Press 1971bGoogle Scholar
  4. Bullock, T.H., Chichibu, S.: Further analysis of sensory coding in electroreceptors of electric fish. Proc. Natl. Acad. Sci. USA54, 422–429 (1965)Google Scholar
  5. De Oliveira Castro, G.: Differentiated nervous fibers that constitute the electric organ ofSternarchus albifrons Linn. An. Acad. Bras. Cienc.27, 557–560 (1955)Google Scholar
  6. Hagiwara, S., Morita, H.: Coding mechanisms of electroreceptor fibers in some electric fish. J. Neurophysiol.26, 551–567 (1963)Google Scholar
  7. Heiligenberg, W.: Electrolocation of objects in the electric fish,Eigenmannia (Rhamphichthyidae, Gymnotoidei). J. Comp. Physiol.87, 137–164 (1973)Google Scholar
  8. Heiligenberg, W.: Theoretical and experimental approaches to spatial aspects of electrolocation. J. Comp. Physiol.103, 247–272 (1975)Google Scholar
  9. Heiligenberg, W.: Principles of electrolocation and jamming avoidance in electric fish. Berlin, Heidelberg, New York: Springer 1977Google Scholar
  10. Hoshimiya, N., Shogen, K., Matsuo, T.: Electrolocation in weakly Electric Fish. IECE Japan, Trans. MBE78-36, 57–66 (1978) (in Jap.)Google Scholar
  11. Hoshimiya, N., Yoshida, S., Shogen, K., Matsuo, T.: Two-terminal electronic neuron model with excitable membrane V-I-t characteristics: Improvement and application. Biol. Cybern (in press)Google Scholar
  12. Knudsen, E.I.: Spatial aspects of the electric fields generated by weakly electric fish. J. Comp. Physiol.99, 103–118 (1975)Google Scholar
  13. Lissmann, H.W., Machin, K.E.: The mechanism of object location inGymnarchus niloticus and similar fish. J. Exp. Biol.35, 451–486 (1958)Google Scholar
  14. Natarajan, R., Seshadri, V.: Electric-field distribution in the human body using finite element method. Med. Biol. Eng.14, 489–493 (1976)Google Scholar
  15. Scheich, H., Bullock, T.H.: The role of electroreceptors in the animal's life. II. The detection of electric fields from electric organs. Proceedings of the 2nd JITA Intern. Symp., Tokyo, Japan. Industrial Technology Association, pp. 1–103 (1972)Google Scholar
  16. Scheich, H., Bullock, T.H.: The detection of electric fields from electric organs. In: Handbook of sensory physiology, Vol. III/3, Fessard, A. (ed.), pp. 201–256. Berlin, Heidelberg, New York: Springer 1974Google Scholar
  17. Scheich, H., Bullock, T.H., Hamstra, R.H. Jr.: Coding properties of two classes of afferent nerve fibers: High frequency electroreceptors in the electric fish,Eigenmannia. J. Neurophysiol.36, 39–60 (1973)Google Scholar
  18. Szabo, T.: Sense organs of the lateral line system in some electric fish of the Gymnotidae, Mormyridae, and Gymnarchidae. J. Morphol.117, 229–250 (1965)Google Scholar
  19. Szabo, T.: Activity of peripheral and central neurons involved in electroreception. In: Lateral line detectors. Cahn, P.H. (ed.), pp. 295–311. Bloomington: Indiana Univ. Press 1967Google Scholar
  20. Zienkiewicz, O.C.: The Finite element method in engineering science. London: McGraw-Hill 1971Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • N. Hoshimiya
    • 1
  • K. Shogen
    • 1
  • T. Matsuo
    • 1
  • S. Chichibu
    • 2
  1. 1.Department of Electronic Engineering, Faculty of EngineeringTohoku UniversitySendaiJapan
  2. 2.Department of PhysiologyKinki University, School of MedicineOsakaJapan

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