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Paper Abstract and Keywords
Presentation 2011-03-07 10:40
A mathematical model of a visual cortical network for the generation of plaid illusion
Daichi Kurebayashi, Kousuke Kurebayashi, Masanobu Miyashita (Numazu Nat. Col. Tech.), Shigeru Tanaka (Univ. of Electro-Communications) NC2010-128
Abstract (in Japanese) (See Japanese page) 
(in English) The plaid stimulation generates two distinct visual percepts: one is an independent motion of two gratings (component motion); and the other is a coherent motion of the gratings in the direction of a resultant velocity vector of the gratings (pattern motion). Also, pattern motion is predominantly perceived when the contrast of junctions of the gratings is high, whereas component motion is predominantly perceived when the contrast of the junctions is low. Thus far, the plaid illusion is generated in the higher visual cortex rather than the early visual cortex. In this study, to reveal the possible involvement of the primary visual cortex in the perceptual transition from component motion to pattern motion with the stimulus contrast, we performed simulation of a neural network composed of FitzHugh-Nagumo neuron models, whose retina-LGN-visual cortex afferent connections were determined by our self-organization model, and examined neuronal response properties to plaid stimuli. When the intracortical interaction is strong, neuronal activities in response to component motion were larger than those in response to pattern motion for low contrast conditions, and neuronal activities in response to pattern motion were predominantly larger than those in response to component motion with contrast-dependent reduction for high contrast conditions. On the other hand, when the intracortical interaction was weak, both types of neuronal activities monotonically increased from the same level with contrast elevation, and the component-pattern transition in neuronal activity was not observed. These results indicate that the component-pattern transition is induced by the regulation of neuronal activities by the intracortical interaction.
Keyword (in Japanese) (See Japanese page) 
(in English) primary visual cortex / direction selectivity / simple cell / Gestalt Illusion / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 461, NC2010-128, pp. 7-12, March 2011.
Paper # NC2010-128 
Date of Issue 2011-02-28 (NC) 
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 NC MBE  
Conference Date 2011-03-07 - 2011-03-09 
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 2011-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A mathematical model of a visual cortical network for the generation of plaid illusion 
Sub Title (in English)  
Keyword(1) primary visual cortex  
Keyword(2) direction selectivity  
Keyword(3) simple cell  
Keyword(4) Gestalt Illusion  
1st Author's Name Daichi Kurebayashi  
1st Author's Affiliation Numazu National College of Technology (Numazu Nat. Col. Tech.)
2nd Author's Name Kousuke Kurebayashi  
2nd Author's Affiliation Numazu National College of Technology (Numazu Nat. Col. Tech.)
3rd Author's Name Masanobu Miyashita  
3rd Author's Affiliation Numazu National College of Technology (Numazu Nat. Col. Tech.)
4th Author's Name Shigeru Tanaka  
4th Author's Affiliation The University of Electro-Communications (Univ. of Electro-Communications)
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Speaker Author-1 
Date Time 2011-03-07 10:40:00 
Presentation Time 25 minutes 
Registration for NC 
Paper # NC2010-128 
Volume (vol) vol.110 
Number (no) no.461 
Page pp.7-12 
Date of Issue 2011-02-28 (NC) 

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