Kolyva, Christina and Tachtsidis, Ilias and Ghosh, Arnab and Moroz, Tracy and Cooper, Chris E and Smith, Martin and Elwell, Clare E (2012) Systematic investigation of changes in oxidized cerebral cytochrome c oxidase concentration during frontal lobe activation in healthy adults. Biomedical Optics Express, 3 (10). p. 2550. DOI https://doi.org/10.1364/boe.3.002550
Kolyva, Christina and Tachtsidis, Ilias and Ghosh, Arnab and Moroz, Tracy and Cooper, Chris E and Smith, Martin and Elwell, Clare E (2012) Systematic investigation of changes in oxidized cerebral cytochrome c oxidase concentration during frontal lobe activation in healthy adults. Biomedical Optics Express, 3 (10). p. 2550. DOI https://doi.org/10.1364/boe.3.002550
Kolyva, Christina and Tachtsidis, Ilias and Ghosh, Arnab and Moroz, Tracy and Cooper, Chris E and Smith, Martin and Elwell, Clare E (2012) Systematic investigation of changes in oxidized cerebral cytochrome c oxidase concentration during frontal lobe activation in healthy adults. Biomedical Optics Express, 3 (10). p. 2550. DOI https://doi.org/10.1364/boe.3.002550
Abstract
Using transcranial near-infrared spectroscopy (NIRS) to measure changes in the redox state of cerebral cytochrome c oxidase (Δ[oxCCO]) during functional activation in healthy adults is hampered by instrumentation and algorithm issues. This study reports the Δ[oxCCO] response measured in such a setting and investigates possible confounders of this measurement. Continuous frontal lobe NIRS measurements were collected from 11 healthy volunteers during a 6-minute anagram-solving task, using a hybrid optical spectrometer (pHOS) that combines multi-distance frequency and broadband components. Only data sets showing a hemodynamic response consistent with functional activation were interrogated for a Δ[oxCCO] response. Simultaneous systemic monitoring data were also available. Possible influences on the Δ[oxCCO] response were systematically investigated and there was no effect of: 1) wavelength range chosen for fitting the measured attenuation spectra; 2) constant or measured, with the pHOS in real-time, differential pathlength factor; 3) systemic hemodynamic changes during functional activation; 4) changes in optical scattering during functional activation. The Δ[oxCCO] response measured in the presence of functional activation was heterogeneous, with the majority of subjects showing significant increase in oxidation, but others having a decrease. We conclude that the heterogeneity in the Δ[oxCCO] response is physiological and not induced by confounding factors in the measurements. © 2012 Optical Society of America.
Item Type: | Article |
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Uncontrolled Keywords: | (170.0170) Medical optics and biotechnology; (170.1610) Clinical applications; (170.2655) Functional monitoring and imaging; (170.5380) Physiology; (170.6510) Spectroscopy, tissue diagnostics; (300.6190) Spectrometers |
Subjects: | Q Science > QH Natural history > QH301 Biology R Medicine > R Medicine (General) |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 12 Jan 2013 16:36 |
Last Modified: | 30 Oct 2024 19:47 |
URI: | http://repository.essex.ac.uk/id/eprint/5075 |
Available files
Filename: boe-3-10-2550.pdf