| IEICE Technical Committee Submission System Conference Paper's Information |
Online Proceedings [Sign in] Tech. Rep. Archives |
| Go Top Page | Go Previous | [Japanese] / [English] |
| Paper Abstract and Keywords | ||
| Presentation | 2011-03-07 10:15 A theoretical study of orientation map alteration induced by single-orientation exposure in the developing brain Nodoka Wakabayashi, Masanobu Miyashita (Numazu Nat. Col. Tech.), Shigeru Tanaka (Univ. of Electro-Communications)  NC2010-127 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Using intrinsic signal optical imaging, it has been confirmed that in the visual cortex of kittens that experienced a single orientation through cylindrical-lens goggles, cortical domains selectively responsive to the experienced orientation expanded with a sensitive period. To elucidate how the onset time of single-orientation experience affects the orientation map alteration, we carried out computer simulations based on our model for the self-organization of geniculocortical inputs. First, we conducted simulation assuming only spontaneous activities in the LGN, which represents a developmental condition before eye opening. Next, using the map established before eye opening as an initial map, we performed simulations by presenting 12 oriented gratings to the model retina, which represents a normal visual condition after eye opening. The arrangement of preferred orientations was found to become more regular and orientation selectivity was enhanced as the simulation step. Finally, simulations assuming a single orientation exposure for a fixed period immediately after the normal visual experience showed that the expansion of cortical domains for the experienced orientation decreased with the simulation step of the normal visual experience. Taken together, it was demonstrated that our model can well reproduce the qualitative features of orientation maps in goggle-reared kittens. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Primary visual cortex / orientation selectivity / self-organization / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 461, NC2010-127, pp. 1-6, March 2011. | |
| Paper # | NC2010-127 | |
| Date of Issue | 2011-02-28 (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 | NC2010-127 |
|
| Conference Information | |
| Committee | NC MBE |
| Conference Date | 2011-03-07 - 2011-03-09 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tamagawa University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2011-03-NC-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A theoretical study of orientation map alteration induced by single-orientation exposure in the developing brain |
| Sub Title (in English) | |
| Keyword(1) | Primary visual cortex |
| Keyword(2) | orientation selectivity |
| Keyword(3) | self-organization |
| Keyword(4) | |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Nodoka Wakabayashi |
| 1st Author's Affiliation | Numazu National College of Technology (Numazu Nat. Col. Tech.) |
| 2nd Author's Name | Masanobu Miyashita |
| 2nd Author's Affiliation | Numazu National College of Technology (Numazu Nat. Col. Tech.) |
| 3rd Author's Name | Shigeru Tanaka |
| 3rd Author's Affiliation | The University of Electro-Communications (Univ. of Electro-Communications) |
| 4th Author's Name | |
| 4th Author's Affiliation | () |
| 5th Author's Name | |
| 5th Author's Affiliation | () |
| 6th Author's Name | |
| 6th Author's Affiliation | () |
| 7th Author's Name | |
| 7th Author's Affiliation | () |
| 8th Author's Name | |
| 8th Author's Affiliation | () |
| 9th Author's Name | |
| 9th Author's Affiliation | () |
| 10th Author's Name | |
| 10th Author's Affiliation | () |
| 11th Author's Name | |
| 11th Author's Affiliation | () |
| 12th Author's Name | |
| 12th Author's Affiliation | () |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2011-03-07 10:15:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2010-127 |
| Volume (vol) | vol.110 |
| Number (no) | no.461 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2011-02-28 (NC) |
[Return to Top Page]