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| Presentation | 2023-03-13 11:05 A mathematical model of competitive growth and pruning of dendritic spines in the postnatal development of neuronal receptive fields and orientation maps in the visual cortex Shigeru Tanaka, Masanobu Miyashita (NIT Numazu College)  NC2022-92 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the cerebral cortex and hippocampus, synaptic contacts are made on axonal boutons rather than axon terminals, and synaptic plasticity is expressed by the dynamic changes in the cytoskeletal structure of dendritic spines. It is also proposed that the formation, growth and pruning of spines occur under the interaction mediated by Rho-GTPases diffusing among neighboring spines on the same dendrite. In the present study, we build a mathematical model of synaptic rewiring based on the interspine interaction and perform computer simulations to reproduce neurons’ receptive fields and orientation-direction joint maps in the visual cortex. Furthermore, we argue the changes of the total number of synapses on excitatory neurons during the critical period. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Synaptic plasticity / Dendritic spine / Orientation-direction maps / Molecular mechanisms / Self-organization model / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 425, NC2022-92, pp. 7-12, March 2023. | |
| Paper # | NC2022-92 | |
| Date of Issue | 2023-03-06 (NC) | |
| ISSN | 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 | NC2022-92 |
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| Conference Information | |
| Committee | NC MBE |
| Conference Date | 2023-03-13 - 2023-03-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | The Univ. of Electro-Communications |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Brain architecture, General |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2023-03-NC-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A mathematical model of competitive growth and pruning of dendritic spines in the postnatal development of neuronal receptive fields and orientation maps in the visual cortex |
| Sub Title (in English) | |
| Keyword(1) | Synaptic plasticity |
| Keyword(2) | Dendritic spine |
| Keyword(3) | Orientation-direction maps |
| Keyword(4) | Molecular mechanisms |
| Keyword(5) | Self-organization model |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shigeru Tanaka |
| 1st Author's Affiliation | National Institute of Technology, Numazu College (NIT Numazu College) |
| 2nd Author's Name | Masanobu Miyashita |
| 2nd Author's Affiliation | National Institute of Technology, Numazu College (NIT Numazu College) |
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| Speaker | Author-1 |
| Date Time | 2023-03-13 11:05:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2022-92 |
| Volume (vol) | vol.122 |
| Number (no) | no.425 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2023-03-06 (NC) |
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