Tachtsidis, I;
Koh, PH;
Stubbs, C;
Elwell, CE;
(2010)
Functional Optical Topography Analysis Using Statistical Parametric Mapping (SPM) Methodology with and without Physiological Confounds.
In: Takahashi, E and Bruley, DF, (eds.)
Oxygen Transport to Tissue XXXI.
(pp. 237 - 243).
Springer Verlag: Berlin/ Heidelberg, Germany.
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Tachtsidis AdvExpMedBiol 662 237-243 2010.pdf Available under License : See the attached licence file. Download (385kB) |
Abstract
Functional optical topography (OT) measures the changes in oxygenated and deoxygenated hemoglobin (HbO(2), HHb) across multiple brain sites which occur in response to neuronal activation of the cerebral cortex. However, identification of areas of cortical activation is a complex task due to intrinsic physiological noise and systemic interference and careful statistical analysis is therefore required. A total of 10 young healthy adults were studied. The activation paradigm comprised of anagrams followed by finger tapping. 12 channels of the OT system were positioned over the frontal cortex and 12 channels over the motor cortex while the systemic physiology (mean blood pressure (MBP), heart rate (HR), scalp flux) was simultaneously monitored. Analysis was done using the functional Optical Signal Analysis (fOSA) software and Statistical Parametric Mapping (SPM), where we utilized two approaches: (i) using only HbO(2) as a regressor in the general linear model (GLM) and (ii) using all of the explanatory variables (HbO(2), MBP, HR and scalp flux) as regressors. Group analysis using SPM showed significant correlation in a large number of OT channels between HbO(2) and systemic regressors; however no differences in activation areas were seen between the two approaches.
Type: | Proceedings paper |
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Title: | Functional Optical Topography Analysis Using Statistical Parametric Mapping (SPM) Methodology with and without Physiological Confounds |
Event: | 36th Annual Meeting of the International Society on Oxygen Transport to Tissue (ISOTT) |
Location: | Sapporo, JAPAN |
Dates: | 3 - 7 August, 2008 |
ISBN-13: | 9781441912398 |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1007/978-1-4419-1241-1_34 |
Publisher version: | http://dx.doi.org/10.1007/978-1-4419-1241-1_34 |
Language: | English |
Additional information: | © 2010 Springer Verlag. The original publication is available at www.springerlink.com |
Keywords: | Decorrelation, recordings |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
URI: | https://discovery.ucl.ac.uk/id/eprint/75764 |
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