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Paper Abstract and Keywords
Presentation 2008-10-24 13:50
Neuronal Spike Sorting Method Using Frequency-domain ICA for Multi-site Multi-unit Recording Data
Yasushi Shiraishi, Norihiro Katayama, Osamu Kikuchi, Takashi Kubo, Akihiro Karashima, Mitsuyuki Nakao (Tohoku Univ.) NC2008-55
Abstract (in Japanese) (See Japanese page) 
(in English) Multi-unit recordings with multi-site electrodes have been widely used in the field of neuroscience and neuroengineering, for such as brain-machine interface. This method requires sorting of neuronal spikes according to the pattern of spike waveforms. For this purpose, the independent component analysis (ICA) is known to be useful. However the accuracy of the sorting result is not sufficient in many cases. We have proposed an efficient spike sorting method combined with the wavelet transform and the complex-valued ICA (WICA method) which achieves higher sorting accuracy than the conventional ones. In this study, we explore the parameter dependency of the WICA method on the accuracy of sorting results by using the simulated multi-unit data. In addition, we propose three methods to automatically determine the threshold level for neuronal spike detection from the unmixed signals obtained by the WICA method.
Keyword (in Japanese) (See Japanese page) 
(in English) Multiunit recording / Spike sorting / Wavelet Transform / Independent Component Analysis / Mother wavelet / Threshold / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 264, NC2008-55, pp. 101-106, Oct. 2008.
Paper # NC2008-55 
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) Neuronal Spike Sorting Method Using Frequency-domain ICA for Multi-site Multi-unit Recording Data 
Sub Title (in English)  
Keyword(1) Multiunit recording  
Keyword(2) Spike sorting  
Keyword(3) Wavelet Transform  
Keyword(4) Independent Component Analysis  
Keyword(5) Mother wavelet  
Keyword(6) Threshold  
1st Author's Name Yasushi Shiraishi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Norihiro Katayama  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Osamu Kikuchi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Takashi Kubo  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
5th Author's Name Akihiro Karashima  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Mitsuyuki Nakao  
6th Author's Affiliation Tohoku University (Tohoku Univ.)
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Date Time 2008-10-24 13:50:00 
Presentation Time 25 
Registration for NC 
Paper # IEICE-NC2008-55 
Volume (vol) IEICE-108 
Number (no) no.264 
Page pp.101-106 
#Pages IEICE-6 
Date of Issue IEICE-NC-2008-10-16 

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