Impact of Changes in Systemic Physiology on fNIRS/NIRS Signals: Analysis Based on Oblique Subspace Projections Decomposition
| Autor: | Felix Scholkmann, Alexander Caicedo, Nassim Nasseri, Hamoon Zohdi, Ursula Wolf |
|---|---|
| Přispěvatelé: | University of Zurich, Thews, Oliver, Nasseri, Nassim |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
medicine.diagnostic_test
Physiology 610 Medicine & health 10027 Clinic for Neonatology 01 natural sciences pCO2 010309 optics 03 medical and health sciences 0302 clinical medicine 1300 General Biochemistry Genetics and Molecular Biology 0103 physical sciences Heart rate Respiration medicine Functional near-infrared spectroscopy 570 Life sciences biology Prefrontal cortex Electrocardiography Perfusion 030217 neurology & neurosurgery Subspace topology |
| Zdroj: | Advances in Experimental Medicine and Biology ISBN: 9783319912851 |
| DOI: | 10.5167/uzh-157791 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|