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Paper Abstract and Keywords
Presentation 2026-01-23 15:10
Influence of Foot Posture Changes on the Sense of Vection in the Unstable Swing Phenomenon
Duan Tianyang, Ren Jingxin, Ando Mitsuhito, Noma Haruo (Ritsumeikan Univ) HCS2025-61
Abstract (in Japanese) (See Japanese page) 
(in English) This study investigated the environmental dependency of the "acceleration illusion," where the action of lifting the feet triggers a subjective increase in movement speed under constant optical flow. A comparative experiment using an immersive Head-Mounted Display (HMD) and a 300-inch large screen revealed that the illusion occurrence rate exceeded 80% in both environments, with no statistically significant difference observed. Furthermore, no significant difference was found in perceptual latency, indicating that the phenomenon occurs stably regardless of the device's physical characteristics, provided a sufficient field of view is ensured. In conclusion, this phenomenon suggests that the change in body state—specifically the loss of ground contact—strongly influences visual speed perception.
Keyword (in Japanese) (See Japanese page) 
(in English) Vection / Self-motion perception / Acceleration illusion / Somatosensory cues / Head-Mounted Display / Virtual Reality / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 331, HCS2025-61, pp. 36-41, Jan. 2026.
Paper # HCS2025-61 
Date of Issue 2026-01-16 (HCS) 
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 HCS2025-61

Conference Information
Committee HCS  
Conference Date 2026-01-23 - 2026-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Ritsumeikan University Osaka Ibaraki Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To HCS 
Conference Code 2026-01-HCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of Foot Posture Changes on the Sense of Vection in the Unstable Swing Phenomenon 
Sub Title (in English)  
Keyword(1) Vection  
Keyword(2) Self-motion perception  
Keyword(3) Acceleration illusion  
Keyword(4) Somatosensory cues  
Keyword(5) Head-Mounted Display  
Keyword(6) Virtual Reality  
Keyword(7)  
Keyword(8)  
1st Author's Name Duan Tianyang  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ)
2nd Author's Name Ren Jingxin  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ)
3rd Author's Name Ando Mitsuhito  
3rd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ)
4th Author's Name Noma Haruo  
4th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ)
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Speaker Author-1 
Date Time 2026-01-23 15:10:00 
Presentation Time 30 minutes 
Registration for HCS 
Paper # HCS2025-61 
Volume (vol) vol.125 
Number (no) no.331 
Page pp.36-41 
#Pages 6 
Date of Issue 2026-01-16 (HCS) 

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