| 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 | 2016-11-04 10:25 Suppression of Pathological Synchronization in Cortical Networks Isao Tokuda, Hisashi Kada (Ritsumeikan Univ.), Jun-nosuke Teramae (Osaka Univ.)  CCS2016-30 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In cortical networks, it has been known that neurons generate self-sustained low-frequency firings even in the absence of sensory stimulus inputs. The so-called “spontaneous activity” typically gives rise to irregular and asynchronous firing among the cortical neurons. Despite numerous theoretical attempts, the main mechanism that underlies the spontaneous firing activity remained unclear. A breakthrough has been recently made by Teramae et al. (2012), who proposed a neuronal network model, in which EPSPs (excitatory postsynaptic potentials) obey a lognormal distribution. The modeling study showed that the lognormal distribution of EPSPs in cortical networks was the key to sustain low-frequency firings of the neurons. Although their model mainly focused on the lognormal distribution of the EPSPs, correlation of the EPSPs observed between bidirectionally coupled neurons has been disregarded. In our study, we add correlated EPSPs to the lognormal network and show that the correlated EPSPs cause synchronized firing among the neurons. Moreover, extremely high firing frequencies are also observed in a group of neurons. We then show that introduction of heterogeneity to inhibitory connections suppresses such pathological (synchronous and high-frequency) activity in both feed-forward and cortical network models. In particular, lognormal distribution with few but strong inhibitory connections works efficiently to reduce correlation of the synchronous firings. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Cortical network / Spontaneous firing activity / Lognormal distribution / Excitatory postsynaptic potential / Inhibitory postsynaptic potential / Desynchronization / / | |
| Reference Info. | IEICE Tech. Rep., vol. 116, no. 285, CCS2016-30, pp. 5-8, Nov. 2016. | |
| Paper # | CCS2016-30 | |
| Date of Issue | 2016-10-28 (CCS) | |
| 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 | CCS2016-30 |
|
| Conference Information | |
| Committee | CCS |
| Conference Date | 2016-11-04 - 2016-11-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto Sangyo Univ. (Musubiwaza Bldg.) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Interaction and Communication, etc. |
| Paper Information | |
| Registration To | CCS |
| Conference Code | 2016-11-CCS |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Suppression of Pathological Synchronization in Cortical Networks |
| Sub Title (in English) | |
| Keyword(1) | Cortical network |
| Keyword(2) | Spontaneous firing activity |
| Keyword(3) | Lognormal distribution |
| Keyword(4) | Excitatory postsynaptic potential |
| Keyword(5) | Inhibitory postsynaptic potential |
| Keyword(6) | Desynchronization |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Isao Tokuda |
| 1st Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 2nd Author's Name | Hisashi Kada |
| 2nd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 3rd Author's Name | Jun-nosuke Teramae |
| 3rd Author's Affiliation | Osaka University (Osaka Univ.) |
| 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 | 2016-11-04 10:25:00 |
| Presentation Time | 25 minutes |
| Registration for | CCS |
| Paper # | CCS2016-30 |
| Volume (vol) | vol.116 |
| Number (no) | no.285 |
| Page | pp.5-8 |
| #Pages | 4 |
| Date of Issue | 2016-10-28 (CCS) |
[Return to Top Page]