Paper Abstract and Keywords |
Presentation |
2013-03-14 13:15
Estimation of Cerebral Blood Flow Changes from fNIRS and fMRI Ryota Aisu (NAIST/ATR), Okito Yamashita, Takeaki Shimokawa, Masa-aki Sato (ATR) NC2012-160 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Functional near-infrared spectroscopy (fNIRS) and functional magnetic resonance imaging (fMRI) are well-known methods to measure signals related to hemodynamic response associated with neural activities. We propose a novel method to estimate oxy, deoxy-hemoglobin concentrations as the latent variables reflecting hemodynamic response from not only fNIRS but also fMRI signals that are known as a more accurate measurement modality than fNIRS. In the proposed method, we model observation processes of fNIRS and fMRI signals from cerebral blood flow changes with parameters that connect the two modalities. The reliable estimation could be obtained by using with the proposed method owing to the accuracy of fMRI signals. In this technical report, we investigate the estimation accuracy of the proposed method by simulations, and examine the estimated cerebral blood flow changes in application to real data sets from finger tapping experiments. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
fNIRS / fMRI / EM Algorithm / Diffuse Optical Tomogaraphy / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 480, NC2012-160, pp. 153-158, March 2013. |
Paper # |
NC2012-160 |
Date of Issue |
2013-03-06 (NC) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and 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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NC2012-160 |
Conference Information |
Committee |
MBE NC |
Conference Date |
2013-03-13 - 2013-03-15 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tamagawa University |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
NC |
Conference Code |
2013-03-MBE-NC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Estimation of Cerebral Blood Flow Changes from fNIRS and fMRI |
Sub Title (in English) |
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fNIRS |
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fMRI |
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EM Algorithm |
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Diffuse Optical Tomogaraphy |
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1st Author's Name |
Ryota Aisu |
1st Author's Affiliation |
Nara Institute of Science and Technology/ATR Neural Information Analysis Laboratories (NAIST/ATR) |
2nd Author's Name |
Okito Yamashita |
2nd Author's Affiliation |
ATR Neural Information Analysis Laboratories (ATR) |
3rd Author's Name |
Takeaki Shimokawa |
3rd Author's Affiliation |
ATR Neural Information Analysis Laboratories (ATR) |
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Masa-aki Sato |
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ATR Neural Information Analysis Laboratories (ATR) |
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Speaker |
Author-1 |
Date Time |
2013-03-14 13:15:00 |
Presentation Time |
25 minutes |
Registration for |
NC |
Paper # |
NC2012-160 |
Volume (vol) |
vol.112 |
Number (no) |
no.480 |
Page |
pp.153-158 |
#Pages |
6 |
Date of Issue |
2013-03-06 (NC) |
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