Effectiveness of Scalp-hemodynamics Reduction to Brain-computer Interfaces by Functional Near-infrared Spectroscopy
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- Sato Takanori
- Nagaoka University of Technology
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- Nambu Isao
- Nagaoka University of Technology
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- Wada Yasuhiro
- Nagaoka University of Technology
Bibliographic Information
- Other Title
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- 機能的近赤外分光法を用いたブレイン・コンピュータ・インタフェースに対する頭皮血流除去の効果
- キノウテキ キンセキガイ ブンコウホウ オ モチイタ ブレイン ・ コンピュータ ・ インタフェース ニ タイスル アタマ ヒ ケツリュウ ジョキョ ノ コウカ
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Abstract
<p>Brain-computer interfaces (BCIs) are systems that control external devices by decoding information from brain activity signals. Functional near-infrared spectroscopy (fNIRS) has been used in many BCIs because of its simplicity of use and portability. However, hemodynamic changes in the scalp layer (scalp-hemodynamics) often contaminate fNIRS signals, and cause degradation of the detection accuracy of functional brain activities. Although several reduction methods have been proposed, no study has investigated their effects on fNIRS-BCI accuracy. In this study, we investigated the effects of applying scalp-hemodynamics reduction to the classification of for four tasks: ball grasping with left-, right-, or both-hands, or resting without movements. We applied a method that combined short source-detector distance channels with a general linear model. Results showed that the binary-class classification accuracy of left- or right-hand and the multi-class classification accuracy of 3-class grasping were significantly improved, suggesting that the scalp-hemodynamics reduction may provide more accurate fNIRS-BCIs.</p>
Journal
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- IEEJ Transactions on Electronics, Information and Systems
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IEEJ Transactions on Electronics, Information and Systems 137 (5), 717-723, 2017
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204612218112
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- NII Article ID
- 130005631897
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- NII Book ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL BIB ID
- 028209239
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed