Coherence between fluctuations in blood flow and oxygen saturation

Bernjak, Alan and Stefanovska, Aneta and McClintock, Peter V. E. and Owen-Lynch, P. Jane and Clarkson, Peter B. M. (2012) Coherence between fluctuations in blood flow and oxygen saturation. Fluctuation and Noise Letters, 11 (1). -. ISSN 0219-4775

[img]
Preview
PDF (FNLBernjak5PostPrint)
FNLBernjak5PostPrint.pdf - Accepted Version

Download (289kB)

Abstract

We have determined the wavelet phase coherence between simultaneously recorded microvascular blood flow and oxygen saturation signals from 88 healthy subjects, thus enabling us to study their common fluctuations. Measurements were taken for 30min from the arm and leg, at two depths. In the skin, blood flow and oxygen saturation were found to be coherent both at the cardiac frequency and below 0.1Hz down to about 0.01Hz. Coherence in the arm extends to lower frequencies than that in the leg. From the deeper recordings, no coherence was found on either limb. The existence of coherence between skin blood flow and oxygen saturation demonstrates causal connections between them within certain frequency ranges. The method has yielded the first detailed insight into the dynamics of blood oxygenation.

Item Type: Journal Article
Journal or Publication Title: Fluctuation and Noise Letters
Additional Information: Electronic version of this article published as Coherence between fluctuations in blood flow and oxygen saturation in Fluctuation and Noise Letters 11, 1, 2012, 1240013 10.1142/S0219477512400135 © [copyright World Scientific Publishing Company] http://www.worldscientific.com/doi/abs/10.1142/S0219477512400135
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2600
Subjects:
Departments: Faculty of Health and Medicine > Biomedical & Life Sciences
Faculty of Science and Technology > Physics
ID Code: 61484
Deposited By: ep_importer_pure
Deposited On: 02 Jan 2013 10:09
Refereed?: Yes
Published?: Published
Last Modified: 18 Feb 2020 01:37
URI: https://eprints.lancs.ac.uk/id/eprint/61484

Actions (login required)

View Item View Item