Title: Effect of gastric myoelectric activity on pulse rate variability in fasting and postprandial conditions

Authors: S. Mohamed Yacin, M. Manivannan, V. Srinivasa Chakravarthy

Addresses: Touch Lab, Biomedical Engineering Group, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India. ' Touch Lab, Biomedical Engineering Group, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India. ' Computational Neuroscience Lab, Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India

Abstract: Aim of this paper is to study the effect of Gastric Myoelectric Activity (GMA) in finger PPG signal. To this end, Pulse Rate Variability (PRV) analysis in combination with Poincare plots was selected. In PRV, the power of High Frequency (HF) component significantly changes in fasting and postprandial state and positively correlated between Power Ratio (PR) of PRV and electrogastrography (EGG) power (r = 0.46; P < 0.05). The results of this study explored that the combination of Poincare plots and PR value could show a new insight into the assessment of gastrointestinal system between different body conditions of a healthy group.

Keywords: autonomic nervous system; enteric nervous system; haemodynamics; EGG; electrogastrography; PSD; power spectral density; blood volume pulse; power ratio; gastric myoelectric activity; pulse rate variability; fasting; postprandial conditions; finger PPG signals; photoplethysmography; gastrointestinal system.

DOI: 10.1504/IJHTM.2011.042373

International Journal of Healthcare Technology and Management, 2011 Vol.12 No.5/6, pp.434 - 446

Published online: 28 Mar 2015 *

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