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| Presentation | 2011-12-20 16:10 Estimation of the neural circuit for the command generation in an insect brain Ikuko Nishikawa, Takayuki Onojima (Ritsumeikan Univ.), Tomoki Kazawa, Shigehiro Namiki (Univ. Tokyo), Hidetoshi Ikeno (Univ. Hyodo), Ryohei Kanzaki (Univ. Tokyo)  NC2011-95 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We report an approach to estimate the functional connection from the possible anatomical connections and physiological response of each neuron. Here we focus on the brain of Bombyx mori, a male silkmoth, which exhibits a programmed behavior for the pheromone orientation on a pheromone detection. The neuroethological experiments revealed that the motor command is generated in the premotor center, composed of the lateral accessory lobe (LAL) and the ventral protocerebrum (VPC). The morphology and the physiological response to the pheromone stimulus are obtained for each main type of LAL-VPC neuron through the intensive electro-physiological and immunohistochemical experiments. However, how the motor command is generated in LAL-VPC, or the information pathway in the network, is still unknown. That is, each piece of puzzle is fairly well investigated, though they are not yet fit in to reveal the whole picture. The goal of our present study is to investigate the functional connection in LAL-VPC to elucidate the mechanism of the motor command generation for the programmed behavior. The present approach is to consider an artificial three-layered neural network to solve an optimization problem based on the above findings of LAL-VPC neuron as the constraints. The optimal solution is the connection which reproduces the observed response best, and we search it through the learning of the artificial neural network. Then, the obtained connection is evaluated by a simulation of LAL-VPC network to reproduce the network dynamics. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Functional Connection / Insect Brain / Bombyx mori / Premotor Center / Odor Source Orientation / Estimation / Optimization / Back-propagation | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 368, NC2011-95, pp. 65-68, Dec. 2011. | |
| Paper # | NC2011-95 | |
| Date of Issue | 2011-12-13 (NC) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | NC2011-95 |
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| Conference Information | |
| Committee | NC MBE |
| Conference Date | 2011-12-20 - 2011-12-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2011-12-NC-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of the neural circuit for the command generation in an insect brain |
| Sub Title (in English) | |
| Keyword(1) | Functional Connection |
| Keyword(2) | Insect Brain |
| Keyword(3) | Bombyx mori |
| Keyword(4) | Premotor Center |
| Keyword(5) | Odor Source Orientation |
| Keyword(6) | Estimation |
| Keyword(7) | Optimization |
| Keyword(8) | Back-propagation |
| 1st Author's Name | Ikuko Nishikawa |
| 1st Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 2nd Author's Name | Takayuki Onojima |
| 2nd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 3rd Author's Name | Tomoki Kazawa |
| 3rd Author's Affiliation | the University of Tokyo (Univ. Tokyo) |
| 4th Author's Name | Shigehiro Namiki |
| 4th Author's Affiliation | the University of Tokyo (Univ. Tokyo) |
| 5th Author's Name | Hidetoshi Ikeno |
| 5th Author's Affiliation | University of Hyogo (Univ. Hyodo) |
| 6th Author's Name | Ryohei Kanzaki |
| 6th Author's Affiliation | the University of Tokyo (Univ. Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2011-12-20 16:10:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2011-95 |
| Volume (vol) | vol.111 |
| Number (no) | no.368 |
| Page | pp.65-68 |
| #Pages | 4 |
| Date of Issue | 2011-12-13 (NC) |
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