2014 Fiscal Year Final Research Report
Analysis of brain and physiological function in arousal maintenance state against sleepiness using fNIRS and multiple physiological signals
| Project/Area Number |
24560534
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Kinki University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KOHAMA Takeshi 近畿大学, 生物理工学部, 准教授 (90295577)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 光トポグラフィー / BOLD効果 / 脳機能成分 / 全身性成分 / アーチファクト除去 / 独立成分分析(ICA) / 覚醒維持状態 / 認知タスク |
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| Outline of Final Research Achievements |
The main objective of the research is to develop a method for analyzing functional brain networks using electroencephalography (EEG) and functional Near-Infrared Spectroscopy (fNIRS). We introduced fNIRS signal because fNIRS signal have the advantage that there is no interference from electro-oculogram (EOG) signal. However, it has some drawbacks, i.e., it contains not only functional signals of the brain but also systemic physiological signals evoked by physiological changes and body motion. We evaluated a separation method based on differences in hemodynamic modalities and based on independent component analysis (ICA). We, then, propose a new method which combines the above two methods in order to compensate for the drawbacks of both the methods in a complementary style. The results showed that the proposed method could be removed various artifact which often contaminated fNIRS signals.
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| Free Research Field |
統計的生体信号処理
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