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. 2018 Jul 19;22:2331216518786850. doi: 10.1177/2331216518786850

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© The Author(s) 2018

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — fNIRS signal processing. Flowchart of signal processing (left), explanation and algorithm of signal processing for each step (middle), and results after each step for one example channel (right). The oxygenated hemoglobins (HbO) concentration changes are in the unit of Mol.