TY - GEN
T1 - Information dynamics in cardiorespiratory time series during mental stress testing
AU - Widjaja, Devy
AU - Montalto, Alessandro
AU - Vlemincx, Elke
AU - Marinazzo, Daniele
AU - Faes, Luca
AU - Van Huffel, Sabine
PY - 2014/1/1
Y1 - 2014/1/1
N2 - In this study, we assessed the information dynamics of respiration and heart rate variability during mental stress testing by means of the cross-entropy, a measure of cardiorespiratory coupling, and the self-entropy of the tachogram conditioned to the knowledge of respiration. Although stress is related to a reduction in vagal activity, no difference in cardiorespiratory coupling was found when 5 minutes of rest and stress were compared. The conditional self-entropy, on the other hand, showed significantly higher values during stress, indicating a higher predictability of the tachogram. These results show that entropy analyses of cardiorespiratory data reveal new information that could not be obtained with traditional heart rate variability studies.
AB - In this study, we assessed the information dynamics of respiration and heart rate variability during mental stress testing by means of the cross-entropy, a measure of cardiorespiratory coupling, and the self-entropy of the tachogram conditioned to the knowledge of respiration. Although stress is related to a reduction in vagal activity, no difference in cardiorespiratory coupling was found when 5 minutes of rest and stress were compared. The conditional self-entropy, on the other hand, showed significantly higher values during stress, indicating a higher predictability of the tachogram. These results show that entropy analyses of cardiorespiratory data reveal new information that could not be obtained with traditional heart rate variability studies.
UR - http://www.scopus.com/inward/record.url?scp=84904489017&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904489017&partnerID=8YFLogxK
U2 - 10.1109/ESGCO.2014.6847500
DO - 10.1109/ESGCO.2014.6847500
M3 - Conference contribution
AN - SCOPUS:84904489017
SN - 9781479939695
T3 - 2014 8th Conference of the European Study Group on Cardiovascular Oscillations, ESGCO 2014
SP - 23
EP - 24
BT - 2014 8th Conference of the European Study Group on Cardiovascular Oscillations, ESGCO 2014
PB - IEEE Computer Society
T2 - 2014 8th Conference of the European Study Group on Cardiovascular Oscillations, ESGCO 2014
Y2 - 25 May 2014 through 28 May 2014
ER -