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Paper Abstract and Keywords
Presentation 2026-01-30 09:55
Effects of Different Stimulus Background Features on SSVEP Responses
Yusuke Iwamoto, Kiyohisa Natsume (KIT) NLP2025-116 MBE2025-56 NC2025-78
Abstract (in Japanese) (See Japanese page) 
(in English) This study aimed to apply steady-state visual evoked potentials (SSVEPs) for brain-computer interface (BCI) in metaverse environments, investigating the effects of background color and luminance of flashing stimuli on SSVEP responses. Conventional SSVEP research is often conducted under uniform background conditions, leaving the impact of dynamically changing visual environments—such as those in the metaverse—insufficiently clarified. This study employed visual stimuli flashing at 6, 15, 20, and 30 Hz. SSVEP measurements were taken under eight background conditions combining background color (red, green, blue, yellow) and background luminance (light, dark). Changes in SSVEP power were evaluated using frequency analysis and analysis of variance (ANOVA) on the measured EEG data. Results showed that 15 Hz stimuli elicited the strongest SSVEP responses across all background conditions, exhibiting minimal dependence on background color or luminance. Conversely, SSVEP responses to 6 Hz stimuli showed luminance dependence under green and yellow backgrounds. Both background color and luminance dependence of SSVEP responses were frequency-dependent. Since both green and yellow backgrounds contain green, this effect is likely mediated by the luminance-sensitive visual M pathway. Based on the above, when using SSVEP within the metaverse, stimuli at 15 Hz or higher show less dependence on background color and luminance. Stimuli around 15 Hz are particularly optimal for achieving stable BCI control under diverse visual conditions, while stimuli around 6 Hz require consideration of background color and luminance.
Keyword (in Japanese) (See Japanese page) 
(in English) Steady state visual evoked potentials / metaverse / background color / background luminance / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 344, NLP2025-116, pp. 145-150, Jan. 2026.
Paper # NLP2025-116 
Date of Issue 2026-01-21 (NLP, MBE, NC) 
ISSN 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 NLP2025-116 MBE2025-56 NC2025-78

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 NLP 
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) Effects of Different Stimulus Background Features on SSVEP Responses 
Sub Title (in English)  
Keyword(1) Steady state visual evoked potentials  
Keyword(2) metaverse  
Keyword(3) background color  
Keyword(4) background luminance  
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1st Author's Name Yusuke Iwamoto  
1st Author's Affiliation Kyushu Institute of Technology Graduate School (KIT)
2nd Author's Name Kiyohisa Natsume  
2nd Author's Affiliation Kyushu Institute of Technology Graduate School (KIT)
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Speaker Author-1 
Date Time 2026-01-30 09:55:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # NLP2025-116, MBE2025-56, NC2025-78 
Volume (vol) vol.125 
Number (no) no.344(NLP), no.345(MBE), no.346(NC) 
Page pp.145-150 
#Pages 6 
Date of Issue 2026-01-21 (NLP, MBE, NC) 

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