NDLI: Measurement of gastric oscillations from finger photoplethysmographic signal using autoregressive model

Content Provider	IEEE Xplore Digital Library
Author	Yacin, S.M. Manivannan, M. Srinivasa, V.
Copyright Year	2010
Description	Author affiliation: Computational Neuroscience Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai-600036, India (Srinivasa, V.) \|\| Touch Lab, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai-600036, India (Yacin, S.M.; Manivannan, M.)
Abstract	In this article we investigate the presence of gastric motility (GM) oscillation in the lower frequency range of photoplethysmography (PPG) signal. The objective of this article is to analyze the lower frequency oscillations of PPG signal using the novel autoregressive (AR) model and studying the presence of gastric motility (GM) rhythm in finger PPG. We acquired finger PPG and GM (measured using Electrogastrogram, EGG) signals at the sampling rate of 100 Hz simultaneously from 10 healthy subjects for 30 minutes duration in fasting and postprandial states. A lower frequency oscillation (≈ 0.05 Hz) called slow wave was extracted from PPG signal which looks similar to the slow wave of GM in both shape and frequency in the range (0 – 0.1953) Hz using discrete wavelet transform (DWT). In a previous study, we demonstrated that there is a good cross-correlation exists between slow waves on both PPG and EGG signals [Annals of Biomedical Engg. DOI: 10.1007/s10439-010-0113-4]. Here in this study, power spectral density (PSD) of PPG and EGG slow waves were estimated using AR spectral estimation method. Dominant frequencies of PPG and EGG slow wave were estimated and the results imply that finger PPG signal reveals GM related information.
Starting Page	514
Ending Page	517
File Size	967800
Page Count	4
File Format	PDF
ISBN	9781424477692
e-ISBN	9781424477708
DOI	10.1109/ICCCCT.2010.5670606
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Discrete wavelet transform Welding AR model spectrum Electrogastrography Biomedical measurements Discrete wavelet transforms Cardiology Component Gastric motility
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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