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題 名 | 脈波信號與PPG信號特徵之相關性研究=Studies on the Correlation between the Features Extracted from the Pulse and PPG Signals |
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作 者 | 林育德; | 書刊名 | 中醫藥年報 |
卷 期 | 28:1 2010.09[民99.09] |
頁 次 | 頁361-387 |
專 輯 | 中醫診斷基準之研究 |
分類號 | 413.2441 |
關鍵詞 | 光體積變化描記圖信號; 脈波信號; 相關係數; PPG signal; Pulse signal; Correlation coefficient; |
語 文 | 中文(Chinese) |
中文摘要 | 光體積變化描記圖 (Photoplethysmography, PPG) 信號能夠幫助瞭解人體末稍血液循環情況,以及提供一個更簡單的非侵入式生理信號量測方式,PPG信號除了有著容易取得與較不受人體型態限制之優點外,本身也蘊藏著 豐富的生理資訊,但是與PPG波形相似的脈波 (pulse) 信號兩信號間之相互關 係,一直以來卻都未有深入之研究。 本研究最主要的目的即是希望藉由分析同步量測之兩組信號,求出PPG 信號與pulse信號兩者之PPI (Peak-to-peak interval, PPI),再對PPI作線性與非線性的比對,線性比對方面,算出兩者之相關係數;非線性比對方面,使用複雜度C方法,得知兩者耦合程度,以探討兩方法是否相同可以取代。 本研究共量測十名健康受測者PPG與pulse信號,相關係數之平均值±標 準差值為0.93±0.05,而非線性比對耦合程度指標(I)值之平均值±標準差值為 0.1±0.05,且一致性之平均值±標準差值為0.97±0.02,由生理意義及實驗結果可知PPG與pulse信號同受心臟收縮與舒張的影響,兩者物理意義不同,HRPPG與HRPulse也有很高的相關性,但兩者仍有些微的差異,在HR的相關研究中,應注意此種差異所可能造成的影響。 |
英文摘要 | PPG (Photoplethysmography) signal is a noninvasive bio-signal measurement equipment which not only provide the peripheral hemal circulatory circumstance but also the heart rate (HR) signal can be obtained by the appropriate algorithm. However, the relationship between PPG signal and the pulse signal which is morphological equivalent to PPG signal have not been discussed and researched before. In this study, the linear and nonlinear methods were used on the PPI (peak- to-peak interval) of PPG and pulse signal which acquired simultaneously to assess the correlation between the two signals. The coupling degree can be extracted by correlation coefficient, the linear method, and Complexity C, the nonlinear method. Hence, the assessment result will indicate the method can be surrogated by the other. Ten healthy people enrolled and the average value of correlation coefficient is 0.93±0.05. The coupling degree index (I) value is 0.1±0.05. The value of agreement is 0.97±0.02. Although the physical meanings of PPG and pulse are different, HRPPG and HRPulse have high correlation. However, there still exists difference between HRPPG and HRPulse. Due to the little difference between PPG and pulse, the effect caused by the difference should be noticed for HR-related researches. |
本系統中英文摘要資訊取自各篇刊載內容。