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International Conference on Neural Information Processing

ICONIP 2011: Neural Information Processing pp 251–258Cite as

Modulations of Electric Organ Discharge and Representation of the Modulations on Electroreceptors

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Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 7064))

Abstract

Weakly electric fish can recognize object’s parameters, such as material, size, distance and shape, in complete darkness. The ability to recognize these object’s parameters is provided by electrosensory system of the fish. The fish generates electric field using its electric organ (EOD: electric organ discharge). An object around the fish distorts the self-generated EOD and make the EOD modulation on fish’s body surface. The EOD modulation is converted into firings of electroreceptor afferents on fish’s body surface. The fish can extract object’s parameters from the firings. In the present study, we investigated features of the EOD modulations including information of object’s shape. Therefore we calculated EOD modulations generated by objects that were various shapes and firing patterns of electroreceptors evoked by electric images using computer simulation. We found that the shape of an object near the fish was represented by the maximum of firing rate of the receptor network. However the difference of the maximum of the firing rate between various objects was small when the distance of the object from the fish was more than about 3-4 cm. This result suggested that detection limit of the fish for object’s shape would be about 3-4 cm and the limit would be smaller than that of other sensory systems.

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Author information

Authors and Affiliations

  1. Department of Computer and Information Engineering, Tsuyama National Collage of Technology, 654-1 Numa , Tsuyama, Okayama, 708-8506, Japan

    Kazuhisa Fujita

  2. University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, Japan, 182-8585

    Kazuhisa Fujita

Authors
  1. Kazuhisa Fujita
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Editors and Affiliations

  1. Department of Computer Science and Engineering, Shanghai Jiao Tong University, 800, Dongchuan Road, 200240, Shanghai, China

    Bao-Liang Lu  & Liqing Zhang  & 

  2. Department of Computer Science and Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

    James Kwok

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Fujita, K. (2011). Modulations of Electric Organ Discharge and Representation of the Modulations on Electroreceptors. In: Lu, BL., Zhang, L., Kwok, J. (eds) Neural Information Processing. ICONIP 2011. Lecture Notes in Computer Science, vol 7064. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24965-5_27

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  • DOI: https://doi.org/10.1007/978-3-642-24965-5_27

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-24964-8

  • Online ISBN: 978-3-642-24965-5

  • eBook Packages: Computer ScienceComputer Science (R0)

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