| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
To analyze biosignal time series, fundamental theory and practical analysis methodology of the multiscale analysis were developed. As an important application of multiscale analysis methods, the long-range correlation analysis has been widely used. In this study, we developed a unified theory of detrending-operation-based random-walk analysis characterizing the long-range correlation observed in biosignal time series. As a practical detrending-operation, we established properties of Savitzky-Golay filter and developed a fast algorithm of the detrending-operation-based random-walk analysis using Savitzky-Golay filter. Moreover, as an application of the multiscale analysis to heart rate variability, we demonstrated that the multiscale analysis is applicable to cerebral infarction risk assessment and mortality risk assessment of cardiac patients.
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