NDLI: Pulse rate variability and gastric electric power in fasting and postprandial conditions

Content Provider	IEEE Xplore Digital Library
Author	Yacin, S.M. Manivannan, M. Chakravarthy, V.S.
Copyright Year	2009
Description	Author affiliation: Biomedical Engineering Group, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai - 600036, India (Yacin, S.M.; Manivannan, M.) \|\| Computational Neuroscience Laboratory, Department of Biotechnology, Indian Institute of Technology Madras, Chennai - 600036, India (Chakravarthy, V.S.)
Abstract	Photoplethysmography (PPG) is typically used to extract cardiac-related information like heart rate and cardiac output, though extra-cardiac information like respiratory rate can also be extracted from PPG. The aim of the current study is to advance this approach further and investigate existence of gastric-related activity in PPG. To this end, we consider pulse rate variability (PRV), which provides information analogous to heart rate variability (HRV). Finger PPG and electrogastrography (EGG) signals were recorded from 8 healthy volunteers in fasting and postprandial state for 30 minutes. Peak-to-peak interval (PPI) analysis shows that the power of high frequency (HF) component in fasting and postprandial state changes significantly. The power ratio (PR), which is the ratio between powers of low frequency band (LF, 0.04–0.15 Hz) to that of high frequency band (HF, 0.15–0.4 Hz) and the EGG power were calculated in fasting and postprandial state. PR was positively correlated with EGG power (r = 0.46; P< 0.05). PR indicates the balancing sympathovagal modulation and vagal nervous activity. The significance of this study is that PR from PRV analysis could be used as a tool for diagnosing gastric system instead of the present invasive/cumbersome methods.
Starting Page	2639
Ending Page	2642
File Size	388489
Page Count	4
File Format	PDF
ISBN	9781424432967
ISSN	1557170X
DOI	10.1109/IEMBS.2009.5335365
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart rate variability Electrocardiography Data mining Frequency Heart rate Hafnium Cardiology Biomedical engineering Biomedical measurements Stomach
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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