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Paper Abstract and Keywords
Presentation 2008-10-24 13:00
Analysis of auditory cortical representation with mutual information
Ryo Yokota, Hidekazu Kose, Kazuyuki Aihara, Ryohei Kanzaki, Hirokazu Takahashi (The Univ. of Tokyo) NC2008-53
Abstract (in Japanese) (See Japanese page) 
(in English) We investigated in the rat auditory cortex how each neuron differentially employs the rate coding and temporal spike coding with respect to the space code, i.e., the functional organization. For the first spike latency (FSL) and firing rate (FR), we measured mutual information (MI) against test stimuli, and investigated the distribution of each MI with respect to the tonotopic organization in the auditory cortex. The FSL MI was significantly higher in the high-frequency area than in the low-frequency area, while FR MI did not vary across the frequency axis in the auditory cortex. This result suggests that the temporal spike coding takes advantage of the tonotopic representation to encode the acoustic stimulus information.
Keyword (in Japanese) (See Japanese page) 
(in English) Rate coding / Temporal coding / Tonotopic representation / Mutual information / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 264, NC2008-53, pp. 89-94, Oct. 2008.
Paper # NC2008-53 
Date of Issue 2008-10-16 (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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee NC  
Conference Date 2008-10-23 - 2008-10-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NC 
Conference Code 2008-10-NC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis of auditory cortical representation with mutual information 
Sub Title (in English)  
Keyword(1) Rate coding  
Keyword(2) Temporal coding  
Keyword(3) Tonotopic representation  
Keyword(4) Mutual information  
1st Author's Name Ryo Yokota  
1st Author's Affiliation The university of Tokyo (The Univ. of Tokyo)
2nd Author's Name Hidekazu Kose  
2nd Author's Affiliation The university of Tokyo (The Univ. of Tokyo)
3rd Author's Name Kazuyuki Aihara  
3rd Author's Affiliation The university of Tokyo (The Univ. of Tokyo)
4th Author's Name Ryohei Kanzaki  
4th Author's Affiliation The university of Tokyo (The Univ. of Tokyo)
5th Author's Name Hirokazu Takahashi  
5th Author's Affiliation The university of Tokyo (The Univ. of Tokyo)
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Date Time 2008-10-24 13:00:00 
Presentation Time 25 
Registration for NC 
Paper # IEICE-NC2008-53 
Volume (vol) IEICE-108 
Number (no) no.264 
Page pp.89-94 
#Pages IEICE-6 
Date of Issue IEICE-NC-2008-10-16 

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