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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 3, Iss. 1 — Jan. 1, 2012
  • pp: 64–74

Independent component analysis of broadband near-infrared spectroscopy data acquired on adult human head

Irina Schelkanova and Vladislav Toronov  »View Author Affiliations


Biomedical Optics Express, Vol. 3, Issue 1, pp. 64-74 (2012)
http://dx.doi.org/10.1364/BOE.3.000064


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Abstract

The goal of this study was to investigate the ability of independent component analysis in the time-spectral domain to isolate physiological sources of functional near infrared spectroscopy signals. We apply independent component analysis to the broadband fNIRS data acquired on the human forehead at 650 different wavelengths between 700 nm and 950 nm. To induce cerebral oxygenation changes we use the breath holding paradigm. We found one major independent component during baseline and two major components during exercise. Each independent component corresponds to one oxy-hemoglobin and one deoxy-hemoglobin time courses. The corresponding characteristic spectra of changes in optical absorption suggested that one component represented vasodilation of cerebral arterioles while the delayed component represented the washout of deoxyhemoglobin either in cerebral capillaries and venules or in extra cerebral tissue. We found that both broadband and isolated wavelength data can produce similar independent components.

© 2011 OSA

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.2655) Medical optics and biotechnology : Functional monitoring and imaging

ToC Category:
Spectroscopic Diagnostics

History
Original Manuscript: September 29, 2011
Revised Manuscript: December 1, 2011
Manuscript Accepted: December 2, 2011
Published: December 9, 2011

Citation
Irina Schelkanova and Vladislav Toronov, "Independent component analysis of broadband near-infrared spectroscopy data acquired on adult human head," Biomed. Opt. Express 3, 64-74 (2012)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-3-1-64


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