Paper Info
Title
Detecting changes in cardiovascular interaction during postural stress using directed coherence
Abstract
In the study, Granger causality frequency analysis based on directed coherence is utilized to detect and quantify directional interaction among heart rate, systolic blood pressure and respiratory signal during postural stress from supine to standing and from standing to supine. The directional information flow during postural stress from supine to standing is dominant on cardiorespiratory interaction, vasculo-respiratory interaction and cardiovascular interaction. Conversely, the reverse postural stress from standing to supine resulted in a contrary effect on both cardiorespiratory and cardiovascular interactions without significant change in vasculo-respiratory interaction. Based on the power change, we observed that postural stress gets affected by both cardiorespiratory and cardiovascular but not by vasculo-respiratory system. Therefore, the directed coherence power calculated for each interaction helps to identify short-term regulatory mechanism during postural stress.
Year
DOI
Venue
2019
10.1007/s11760-019-01495-4
Signal, Image and Video Processing
Keywords
Field
DocType
Frequency analysis, Directed coherence (DC), Cardiovascular, Respiration, Postural stress
Pattern recognition,Internal medicine,Cardiology,Coherence (physics),Artificial intelligence,Blood pressure,Heart rate,Supine position,Mathematics,Cardiorespiratory fitness
Journal
Volume
Issue
ISSN
13
8
1863-1703
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
M. C. Helen Mary100.68
Dilbag Singh211.72
K. K. Deepak300.68