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Paper Abstract and Keywords
Presentation 2015-06-25 14:10
Influence of visual stimulus brightness on motor learning of oculomotor neural integrator -- Comparison with the influence of gravity --
Kohei Urase, Shuntaro Miki, Yutaka Hirata (Chubu Univ.) NC2015-6
Abstract (in Japanese) (See Japanese page) 
(in English) Our previous studies have shown that oculomotor learning is promoted under hyper-gravity environment in both goldfish and humans. This learning promotion was shown to occur during prism adaptation in humans, and oculomotor neural integrator (NI) adaptation in goldfish. An augmented gravitation input would significantly increase vestibular input to both the goldfish and human cerebellum. Thus, a working hypothesis for accelerated motor learning under hyper-gravity was envisioned to be an up-regulated Purkinje cell activity enabling more efficient modification of synaptic efficacy. If so, it should be promoted motor learning by causing steadily increased Purkinje cell activity by different stimuli. DC firing rate of Purkinje cells has been shown to become high in light than in dark. Presently we carried out the NI adaptation using two types of visual stimuli to induce motor learning in goldfish. Either white spots were displayed as a stimulus on a black background (Darker) or black spots on white background (Brighter). We compared the learning curves of NI adaptation. Accelerating effect was found in NI behavior with the Brighter than the Darker visual stimulus. This finding supports the hypothesis that Purkinje cell up-regulation alone may produce more efficient changes in synaptic efficacy contributing to the neural basis of motor learning.
Keyword (in Japanese) (See Japanese page) 
(in English) Eye movement / Goldfish / Cerebellum / Promotion of motor learning / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 111, NC2015-6, pp. 69-72, June 2015.
Paper # NC2015-6 
Date of Issue 2015-06-17 (NC) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee NC IPSJ-BIO IBISML IPSJ-MPS  
Conference Date 2015-06-23 - 2015-06-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Institute of Science and Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Machine Learning Approach to Biodata Mining, and General 
Paper Information
Registration To NC 
Conference Code 2015-06-NC-BIO-IBISML-MPS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of visual stimulus brightness on motor learning of oculomotor neural integrator 
Sub Title (in English) Comparison with the influence of gravity 
Keyword(1) Eye movement  
Keyword(2) Goldfish  
Keyword(3) Cerebellum  
Keyword(4) Promotion of motor learning  
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1st Author's Name Kohei Urase  
1st Author's Affiliation Chubu University (Chubu Univ.)
2nd Author's Name Shuntaro Miki  
2nd Author's Affiliation Chubu University (Chubu Univ.)
3rd Author's Name Yutaka Hirata  
3rd Author's Affiliation Chubu University (Chubu Univ.)
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Speaker Author-1 
Date Time 2015-06-25 14:10:00 
Presentation Time 25 minutes 
Registration for NC 
Paper # NC2015-6 
Volume (vol) vol.115 
Number (no) no.111 
Page pp.69-72 
#Pages
Date of Issue 2015-06-17 (NC) 


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