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Paper Abstract and Keywords
Presentation 2011-03-16 14:10
Sparse Coding for the Representation of Shape in Cortical Area V4 -- A Computational Study --
Tatsuroh Mashita, Ko Sakai (Univ. of Tsukuba)
Abstract (in Japanese) (See Japanese page) 
(in English) We examined the essence of the receptive-filed properties of V4 neurons from the view point of information, specifically whether the coding of V4 neurons is in a form of sparse representation. The component analyses with the constraint of sparseness were applied to the image patches that simulated the responses of either V1 or V2 neurons for natural images. With the image patches that corresponded to the outputs of V2 neurons, we obtained a set of basis functions that were selective to contours with particular curvatures, which is similar to V4 receptive-fields. The result suggests the significance of sparse coding in the representation of V4 neurons, and the importance of afferent inputs from V2 in the formation of the V4 receptive-filed property.
Keyword (in Japanese) (See Japanese page) 
(in English) Sparse Coding / V4 receptive field properties / Shape representation / / / / /  
Reference Info. ITE Tech. Rep., vol. 35, no. 16, HI2011-53, pp. 97-100, March 2011.
Paper # HI2011-53 
Date of Issue 2011-03-08 (HI) 
ISSN Print edition: ISSN 1342-6893
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Conference Information
Committee HI  
Conference Date 2011-03-15 - 2011-03-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Univ. of Tech. 
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To HI 
Conference Code 2011-03-HI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Sparse Coding for the Representation of Shape in Cortical Area V4 
Sub Title (in English) A Computational Study 
Keyword(1) Sparse Coding  
Keyword(2) V4 receptive field properties  
Keyword(3) Shape representation  
1st Author's Name Tatsuroh Mashita  
1st Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
2nd Author's Name Ko Sakai  
2nd Author's Affiliation University of Tsukuba (Univ. of Tsukuba)
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Speaker Author-1 
Date Time 2011-03-16 14:10:00 
Presentation Time 20 minutes 
Registration for HI 
Paper # HI2011-53 
Volume (vol) vol.35 
Number (no) no.16 
Page pp.97-100 
Date of Issue 2011-03-08 (HI) 

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