TY - CHAP
T1 - Impact of changes in systemic physiology on fNIRS/NIRS signals
T2 - Analysis based on oblique subspace projections decomposition
AU - Nasseri, Nassim
AU - Caicedo, Alexander
AU - Scholkmann, Felix
AU - Zohdi, Hamoon
AU - Wolf, Ursula
N1 - Publisher Copyright:
© 2018, Springer International Publishing AG, part of Springer Nature.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2018
Y1 - 2018
N2 - Measurements of cerebral and muscle oxygenation (StO2) and perfusion ([tHb]) with functional near-infrared spectroscopy (fNIRS) and near infrared spectroscopy (NIRS), respectively, can be influenced by changes in systemic physiology. The aim of our study was to apply the oblique subspace projections signal decomposition (OSPSD) to find the contribution from systemic physiology, i.e. heart rate (HR), electrocardiography (ECG)-derived respiration (EDR) and partial pressure of carbon dioxide (pCO2) to StO2 and [tHb] signals measured on the prefrontal cortex (PFC) and calf muscle. OSPSD was applied to two datasets (n1 = 42, n2 = 79 measurements) from two fNIRS/NIRS speech studies. We found that (i) all StO2 and [tHb] signals contained components related to changes in systemic physiology, (ii) the contribution from systemic physiology varied strongly between subjects, and (iii) changes in systemic physiology generally influenced fNIRS signals on the left and right PFC to a similar degree.
AB - Measurements of cerebral and muscle oxygenation (StO2) and perfusion ([tHb]) with functional near-infrared spectroscopy (fNIRS) and near infrared spectroscopy (NIRS), respectively, can be influenced by changes in systemic physiology. The aim of our study was to apply the oblique subspace projections signal decomposition (OSPSD) to find the contribution from systemic physiology, i.e. heart rate (HR), electrocardiography (ECG)-derived respiration (EDR) and partial pressure of carbon dioxide (pCO2) to StO2 and [tHb] signals measured on the prefrontal cortex (PFC) and calf muscle. OSPSD was applied to two datasets (n1 = 42, n2 = 79 measurements) from two fNIRS/NIRS speech studies. We found that (i) all StO2 and [tHb] signals contained components related to changes in systemic physiology, (ii) the contribution from systemic physiology varied strongly between subjects, and (iii) changes in systemic physiology generally influenced fNIRS signals on the left and right PFC to a similar degree.
UR - http://www.scopus.com/inward/record.url?scp=85052906948&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052906948&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-91287-5_19
DO - 10.1007/978-3-319-91287-5_19
M3 - Chapter
C2 - 30178333
AN - SCOPUS:85052906948
T3 - Advances in Experimental Medicine and Biology
SP - 119
EP - 125
BT - Advances in Experimental Medicine and Biology
PB - Springer New York LLC
ER -