| Presentation | 2017-12-16 Neural coding of object's shape in electrolocation of weakly electic fish Shun Okuno, Kazuhisa Fujita, Yoshiki Kashimori, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Weakly electric fish generate an electric field around their fish body. An object nearby fish elicits a modulation of electric field. The fish can know object’s features such as lateral distance, size, and shape by analyzing the modulation in their brain. This behavior is called electrolocation. Although the neural system of the fish has been established experimentally, it is not yet clear how these object features are encoded by the neural system of the fish. In the present study, we focus on the neural encoding of object’s shape. We develop a model for calculating electric fields modulated by objects with different shapes, on the basis of the finite-element method. Using the model, we show that the difference in the shape of an equilateral triangle and a square object appears in the temporal variations of the maximum amplitude of electric images elicited by rotations of these objects. We also develop a neural model of electrosensory system that consists of the models of electroreceptors and hindbrain neurons. We show that shape information of these objects are encoded in to the slopes of the temporal courses of receptor firing, contrasted by hindbrain neurons. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Electrolocation / Finite-element method / Objet's shape / Neural model |
| Paper # | NC2017-47 |
| Date of Issue | 2017-12-09 (NC) |
| Conference Information | |
| Committee | MBE / NC |
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| Conference Date | 2017/12/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME, general |
| Chair | Kazuki Nakajima(Univ. of Toyama) / Masafumi Hagiwara(Keio Univ.) |
| Vice Chair | Masaki Kyoso(TCU) / Yutaka Hirata(Chubu Univ.) |
| Secretary | Masaki Kyoso(Toyama Pref. Univ.) / Yutaka Hirata(Kindai Univ.) |
| Assistant | Kim Juhyon(Univ. of Toyama) / Takumi Kobayashi(YNU) / Yoshihisa Shinozawa(Keio Univ.) / Keiichiro Inagaki(Chubu Univ.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Neural coding of object's shape in electrolocation of weakly electic fish |
| Sub Title (in English) | |
| Keyword(1) | Electrolocation |
| Keyword(2) | Finite-element method |
| Keyword(3) | Objet's shape |
| Keyword(4) | Neural model |
| 1st Author's Name | Shun Okuno |
| 1st Author's Affiliation | The University of Electro-Communications(UEC) |
| 2nd Author's Name | Kazuhisa Fujita |
| 2nd Author's Affiliation | National Institute of Technology, Tsuyama College/The University of Electro-Communications(NIT, Tsuyama College/UEC) |
| 3rd Author's Name | Yoshiki Kashimori |
| 3rd Author's Affiliation | The University of Electro-Communications(UEC) |
| Date | 2017-12-16 |
| Paper # | NC2017-47 |
| Volume (vol) | vol.117 |
| Number (no) | NC-361 |
| Page | pp.pp.41-46(NC), |
| #Pages | 6 |
| Date of Issue | 2017-12-09 (NC) |