Extracting Gastric Motility information from finger Photoplethysmography (PPG)

Properties related to the circulatory system are usually extracted from finger Photoplethysmography (PPG). But there is at least one case of extracting extracardiac information from PPG  viz., the respiratory rhythm. Extending this line of argument we show that it is possible to extract gastric motility information from finger PPG.

• S. Mohamed Yacin, M. Manivannan, V. Srinivasa Chakravarthy, On non-invasive measurement of Gastric motility from finger photoplethysmographic signal, Annals of Biomedical Engineering, vol 38, no 12, 3744-3755,  2010.
• S. Mohamed Yacin, M. Manivannan and V. Srinivasa Chakravarthy, Reconstruction of Gastric Slow wave from Finger Photoplethysmographic Signal using Radial Basis Function Neural Network, Medical Biological Engineering and Computing, Volume 49, Number 11, 1241-1247, 2011.
• S. Mohamed Yacin and M. Manivannan, V.S. Chakravarthy, Effect of gastric myoelectric activity on Pulse Rate Variability in fasting and postprandial conditions, International Journal of Healthcare Technology and Management, Vol. 12, No.5/6  pp. 434 – 446, 2011.