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Paper Abstract and Keywords
Presentation 2016-03-23 14:00
External Input Response of Neural Network Model with Irregular Spontaneous Activity
Yoshihiro Nagano, Ryo Karakida (UTokyo), Norifumi Watanabe (TUT), Atsushi Aoyama (Keio Univ), Masato Okada (UTokyo) NC2015-85
Abstract (in Japanese) (See Japanese page) 
(in English) The previous studies have reported that the neural network model with connections following a lognormal distribution reproduces the irregular spontaneous activity. On the other hand, neurons exhibit rich evoked activities in vivo driven by sensory stimulus or top-down signals from higher cortical area. In this study, we reveal that the Teramae's model generates input driven gamma population oscillation. Moreover, when the inhibitory external inputs were injected to the model, there were firing-silent bistable regions in the input parameter space according to initial firing state. The bimodal membrane potential distribution was obtained under such conditions, and the model enables the physiologically reported up-down state. From these results, we can conclude that the SSWD model displays various evoked activities by the external input, and is biologically plausible.
Keyword (in Japanese) (See Japanese page) 
(in English) Neural Network Model / Spontaneous Activity / Oscillation / Bistability / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 514, NC2015-85, pp. 89-94, March 2016.
Paper # NC2015-85 
Date of Issue 2016-03-15 (NC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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)
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Conference Information
Committee MBE NC  
Conference Date 2016-03-22 - 2016-03-23 
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 2016-03-MBE-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) External Input Response of Neural Network Model with Irregular Spontaneous Activity 
Sub Title (in English)  
Keyword(1) Neural Network Model  
Keyword(2) Spontaneous Activity  
Keyword(3) Oscillation  
Keyword(4) Bistability  
1st Author's Name Yoshihiro Nagano  
1st Author's Affiliation The University of Tokyo (UTokyo)
2nd Author's Name Ryo Karakida  
2nd Author's Affiliation The University of Tokyo (UTokyo)
3rd Author's Name Norifumi Watanabe  
3rd Author's Affiliation Tokyo University of Technology (TUT)
4th Author's Name Atsushi Aoyama  
4th Author's Affiliation Keio University (Keio Univ)
5th Author's Name Masato Okada  
5th Author's Affiliation The University of Tokyo (UTokyo)
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Date Time 2016-03-23 14:00:00 
Presentation Time 25 
Registration for NC 
Paper # IEICE-NC2015-85 
Volume (vol) IEICE-115 
Number (no) no.514 
Page pp.89-94 
#Pages IEICE-6 
Date of Issue IEICE-NC-2016-03-15 

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