Algorithm for removing scalp signals from functional near-infrared spectroscopy signals in real time using multidistance optodes

Masashi Kiguchi; Tsukasa Funane

doi:10.1117/1.JBO.19.11.110505

1 December 2014 Algorithm for removing scalp signals from functional near-infrared spectroscopy signals in real time using multidistance optodes

Masashi Kiguchi, Tsukasa Funane

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Journal of Biomedical Optics, Vol. 19, Issue 11, 110505 (December 2014). https://doi.org/10.1117/1.JBO.19.11.110505

Abstract

A real-time algorithm for removing scalp-blood signals from functional near-infrared spectroscopy signals is proposed. Scalp and deep signals have different dependencies on the source-detector distance. These signals were separated using this characteristic. The algorithm was validated through an experiment using a dynamic phantom in which shallow and deep absorptions were independently changed. The algorithm for measurement of oxygenated and deoxygenated hemoglobins using two wavelengths was explicitly obtained. This algorithm is potentially useful for real-time systems, e.g., brain-computer interfaces and neuro-feedback systems.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Masashi Kiguchi and Tsukasa Funane "Algorithm for removing scalp signals from functional near-infrared spectroscopy signals in real time using multidistance optodes," Journal of Biomedical Optics 19(11), 110505 (1 December 2014). https://doi.org/10.1117/1.JBO.19.11.110505

Published: 1 December 2014

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