Title :
Statistical analysis of wrist pulse signals obtained under different food intake conditions
Author :
Rangaprakash, D.
Author_Institution :
Indian Inst. of Sci., Bangalore, India
Abstract :
It is well known that wrist pulse signals contain information about the status of health of a person and hence diagnosis based on pulse signals has assumed great importance since long time. In this paper the efficacy of signal processing techniques in extracting useful information from wrist pulse signals has been demonstrated by using signals recorded under two different experimental conditions viz. before lunch condition and after lunch condition. We have used Pearson´s product-moment correlation coefficient, which is an effective measure of phase synchronization, in making a statistical analysis of wrist pulse signals. Contour plots and boxplots are used to illustrate various differences. Two-sample t-tests show that the correlations show statistically significant differences between the groups. Results show that the correlation coefficient is effective in distinguishing the changes taking place after having lunch. This paper demonstrates the ability of the wrist pulse signals in detecting changes occurring under two different conditions. The study assumes importance in view of limited literature available on the analysis of wrist pulse signals in the case of food intake and also in view of its potential health care applications.
Keywords :
bioelectric potentials; electrocardiography; medical signal processing; neurophysiology; statistical analysis; Pearson´s product-moment correlation coefficient; contour plots; correlation coefficient; food intake conditions; health care applications; health status; phase synchronization; pulse signal diagnosis; signal processing techniques; signal recording; statistical analysis; statistical significant differences; two-sample t-tests; wrist pulse signals; Barium; Indexes; Universal Serial Bus; Wrist; Hypothesis testing; Pearson´s correlation coefficient; Wrist pulse signal;
Conference_Titel :
Communications and Signal Processing (ICCSP), 2014 International Conference on
Conference_Location :
Melmaruvathur
Print_ISBN :
978-1-4799-3357-0
DOI :
10.1109/ICCSP.2014.6950081