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Paper Abstract and Keywords
Presentation 2016-03-22 15:20
Cerebellar neural network model for resolving tilt-translation ambiguity
Yoshiki Iida, Keiichiro Inagaki, Yutaka Hirata (Chubu University) NC2015-96
Abstract (in Japanese) (See Japanese page) 
(in English) According to Einstein’s equivalence principle, accelerations in translational motion are physically indistinguishable from gravitational accelerations caused by tilt. This applies to our biological linear accelerometers, the otolith organs. It is known that primary otolith afferent neurons respond equivalently during linear and tilt motions if their trajectories are appropriately matched, while we can perceive these two motions properly as different motions. Recent studies in monkey demonstrated that output of cerebellar vermis selectively encodes translational motion during tilt-translation combining stimuli. Theoretically, the tilt-translation ambiguity problem can be solved by using information about angular velocity during tilt. In support, it is reported that the dissociation of translation from tilt in vermal Purkinje cells is no longer possible in monkeys whose semicircular canals were plugged and angular velocity information was not available. Therefore, it is postulated that the tilt-translation ambiguity problem is solved in the vermis by using information from the otolith and semicircular canals. In this study, we reconfigured our cerebellar neuronal network model for vestibuloocular reflex adaptation and developed a model of cerebellar vermis to understand its role in solving tilt-translation ambiguity. We show that the model successfully reproduces vermal Purkinje cell responses encoding selectively translation information during tilt-translation combining stimuli. When we shut-down semicircular canal input to the model by mimicking canal plugging, model Purkinje cells showed activities more like those of otolith primary afferent neurons. From these results, it is suggested that the developed model is useful to explore underlying mechanisms of the tilt-translation ambiguity problem.
Keyword (in Japanese) (See Japanese page) 
(in English) Vestibular / Spatial orientation / Cerebellar vermis / Model simulation / Motion perception / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 514, NC2015-96, pp. 155-160, March 2016.
Paper # NC2015-96 
Date of Issue 2016-03-15 (NC) 
ISSN Print edition: ISSN 0913-5685    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 NC2015-96

Conference Information
Committee MBE NC  
Conference Date 2016-03-22 - 2016-03-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NC 
Conference Code 2016-03-MBE-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Cerebellar neural network model for resolving tilt-translation ambiguity 
Sub Title (in English)  
Keyword(1) Vestibular  
Keyword(2) Spatial orientation  
Keyword(3) Cerebellar vermis  
Keyword(4) Model simulation  
Keyword(5) Motion perception  
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Keyword(8)  
1st Author's Name Yoshiki Iida  
1st Author's Affiliation Chubu University (Chubu University)
2nd Author's Name Keiichiro Inagaki  
2nd Author's Affiliation Chubu University (Chubu University)
3rd Author's Name Yutaka Hirata  
3rd Author's Affiliation Chubu University (Chubu University)
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Speaker Author-2 
Date Time 2016-03-22 15:20:00 
Presentation Time 25 minutes 
Registration for NC 
Paper # NC2015-96 
Volume (vol) vol.115 
Number (no) no.514 
Page pp.155-160 
#Pages 6 
Date of Issue 2016-03-15 (NC) 

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