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Paper Abstract and Keywords
Presentation 2024-10-17 14:50
Analysis of Synchronization Features in Excitatory-Inhibitory Neural Systems with Modulated E/I Balance
Akio Sugawara (CIT), Nobuhiko Wagatsuma (TU), Keiichiro Inagaki (CU), Sou Nobukawa (CIT) CAS2024-39 NLP2024-69
Abstract (in Japanese) (See Japanese page) 
(in English) The balance between excitatory and inhibitory neurons in the brain (E/I balance) significantly influences cognitive functions and sensory processing. The E/I balance, primarily regulated by PV (Parvalbumin) neurons maturing during the critical period, shifts in mental disorders such as schizophrenia and autism. In patients with a high E/I ratio, two prominent features are observed: excessive spontaneous firing activity and reduced responsiveness to stimuli. This study utilizes a simplified model of a pair of coupled excitatory and inhibitory neurons to analyze the characteristics of CCI (Chaos-Chaos Intermittency, the intermittent transition between multiple separated attractors) and evaluates the impact of E/I balance variations on spontaneous firing and stimulus response properties. The results indicate that an increase in the E/I ratio enhances transitions between attractors, with the system's instability index showing a nearly monotonic rise. Additionally, in terms of stimulus response properties, increasing the E/I ratio leads to a gradual weakening in the system’s synchronization to input signals. These findings highlight the critical role of E/I balance in regulating the stability and responsiveness of neural circuits.
Keyword (in Japanese) (See Japanese page) 
(in English) Excitatory/Inhibitory balance / Chaos-chaos intermittency / long-tailed properties / / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 208, NLP2024-69, pp. 64-69, Oct. 2024.
Paper # NLP2024-69 
Date of Issue 2024-10-10 (CAS, NLP) 
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 CAS2024-39 NLP2024-69

Conference Information
Committee NLP CAS  
Conference Date 2024-10-17 - 2024-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Information Center, Tottori University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Nonlinear Problems, Circuits and Systems, etc. 
Paper Information
Registration To NLP 
Conference Code 2024-10-NLP-CAS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis of Synchronization Features in Excitatory-Inhibitory Neural Systems with Modulated E/I Balance 
Sub Title (in English)  
Keyword(1) Excitatory/Inhibitory balance  
Keyword(2) Chaos-chaos intermittency  
Keyword(3) long-tailed properties  
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1st Author's Name Akio Sugawara  
1st Author's Affiliation Chiba Institute of Technology (CIT)
2nd Author's Name Nobuhiko Wagatsuma  
2nd Author's Affiliation Toho University (TU)
3rd Author's Name Keiichiro Inagaki  
3rd Author's Affiliation Chubu University (CU)
4th Author's Name Sou Nobukawa  
4th Author's Affiliation Chiba Institute of Technology (CIT)
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Speaker Author-1 
Date Time 2024-10-17 14:50:00 
Presentation Time 20 minutes 
Registration for NLP 
Paper # CAS2024-39, NLP2024-69 
Volume (vol) vol.124 
Number (no) no.207(CAS), no.208(NLP) 
Page pp.64-69 
#Pages 6 
Date of Issue 2024-10-10 (CAS, NLP) 

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