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Paper Abstract and Keywords
Presentation 2014-09-26 10:20
Evaluation of information rate in responses of retinal photoreceptor layer considering miniature eye movements
Keiichiro Inagaki (Chubu Univ.), Takayuki Kannon (RIKEN), Yoshimi Kamiyama (Aichi Pref. Univ.), Akito Ishihara (Chukyo Univ.), Shiro Usui (Toyohashi Univ. of Tech.) HIP2014-54
Abstract (in Japanese) (See Japanese page) 
(in English) Fixation, holding one’s eyes on an object, plays a key role in the perception of visual scenes. The miniature fluctuation, microsaccades, drifts and tremors, are involved in the fixation even the eyes seem still. Although the functional roles of the miniature eye movements have gradually been uncovered, the detail of those still remains mysteries. Here, we constructed a large scale visual system model to investigate contribution of the miniature eye movement on the visual functions ―especially focusing on the processing in the retinal photoreceptors. The model consists of brainstem (eye movement control), eye optics, and photoreceptors; and those models are constructed based on the known anatomical and physiological evidence. We simulated fixation of the several scenes using the constructed model and evaluated photoreceptor responses by information rate. We confirmed that the information rate for the photoreceptor responses was increased with the miniature eye movement, while it was decreased without miniature eye movement. We also confirmed that increasing of the information rate resulted from increasing the responses for the edges of objects by the miniature eye movement. These results suggest that visual information is already enhanced at the retina level by miniature eye movement.
Keyword (in Japanese) (See Japanese page) 
(in English) microsaccade / drift / eye optics, / cone cell / cone mosaic / model simulation / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 226, HIP2014-54, pp. 61-65, Sept. 2014.
Paper # HIP2014-54 
Date of Issue 2014-09-18 (HIP) 
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 HIP  
Conference Date 2014-09-25 - 2014-09-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Nara Prefectural New Public Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To HIP 
Conference Code 2014-09-HIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of information rate in responses of retinal photoreceptor layer considering miniature eye movements 
Sub Title (in English)  
Keyword(1) microsaccade  
Keyword(2) drift  
Keyword(3) eye optics,  
Keyword(4) cone cell  
Keyword(5) cone mosaic  
Keyword(6) model simulation  
1st Author's Name Keiichiro Inagaki  
1st Author's Affiliation Chubu University (Chubu Univ.)
2nd Author's Name Takayuki Kannon  
2nd Author's Affiliation RIKEN (RIKEN)
3rd Author's Name Yoshimi Kamiyama  
3rd Author's Affiliation Aichi Prefectural University (Aichi Pref. Univ.)
4th Author's Name Akito Ishihara  
4th Author's Affiliation Chukyo University (Chukyo Univ.)
5th Author's Name Shiro Usui  
5th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. of Tech.)
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Speaker Author-1 
Date Time 2014-09-26 10:20:00 
Presentation Time 25 minutes 
Registration for HIP 
Paper # HIP2014-54 
Volume (vol) vol.114 
Number (no) no.226 
Page pp.61-65 
Date of Issue 2014-09-18 (HIP) 

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