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Paper Abstract and Keywords
Presentation 2026-01-28 10:45
Evaluation of Excitatory/Inhibitory Balance Before and After Spinal Cord Injury Using Data Assimilation
Tatsuki Watanabe (Nagaoka Univ. of Tech.), Hiroshi Yokoyama (Okayama Univ.), Yasuhiro Wada, Isao Nambu (Nagaoka Univ. of Tech.) NLP2025-85 MBE2025-25 NC2025-47
Abstract (in Japanese) (See Japanese page) 
(in English) Macroscale transient dynamics reflected in electrocorticography (ECoG) originate from the interacting population activity between excitatory (E) and inhibitory (I) neurons. Maintaining an appropriate balance of such interactions (E/I balance) is crucial for understanding the neural mechanisms in the brain. Recent studies suggest that E/I imbalance is involved in the pathological mechanisms of motor impairments after spinal cord injury (SCI); however, the underlying mechanisms remain unclear. Here, we applied a neural-mass-model-based tracking for E/I balance changes using ECoG signals obtained from monkeys’ SCI model. The estimated E/I balance is evaluated to reveal the mechanisms underlying recovery of motor dysfunction by comparing the E/I changes between before and after injury.We found that movement-related E/I balance changes are differentiated between reaching and grasping, suggesting underlying mechanisms are task-dependent.
Keyword (in Japanese) (See Japanese page) 
(in English) Excitation/Inhibition Balance / Data Assimilation / Spinal Cord Injury / Electrocorticogram / Neural Mass Model / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 346, NC2025-47, pp. 14-18, Jan. 2026.
Paper # NC2025-47 
Date of Issue 2026-01-21 (NLP, MBE, NC) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 NLP2025-85 MBE2025-25 NC2025-47

Conference Information
Committee NC MBE NLP IEE-MBE  
Conference Date 2026-01-28 - 2026-01-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Institute of Technology, Wakamatsu Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) NC, NLP, ME, etc. 
Paper Information
Registration To NC 
Conference Code 2026-01-NC-MBE-NLP-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Excitatory/Inhibitory Balance Before and After Spinal Cord Injury Using Data Assimilation 
Sub Title (in English)  
Keyword(1) Excitation/Inhibition Balance  
Keyword(2) Data Assimilation  
Keyword(3) Spinal Cord Injury  
Keyword(4) Electrocorticogram  
Keyword(5) Neural Mass Model  
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Keyword(7)  
Keyword(8)  
1st Author's Name Tatsuki Watanabe  
1st Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
2nd Author's Name Hiroshi Yokoyama  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Yasuhiro Wada  
3rd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
4th Author's Name Isao Nambu  
4th Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
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Speaker Author-1 
Date Time 2026-01-28 10:45:00 
Presentation Time 25 minutes 
Registration for NC 
Paper # NLP2025-85, MBE2025-25, NC2025-47 
Volume (vol) vol.125 
Number (no) no.344(NLP), no.345(MBE), no.346(NC) 
Page pp.14-18 
#Pages 5 
Date of Issue 2026-01-21 (NLP, MBE, NC) 

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