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Example of motion artifacts in raw fNIRS signals (A) as shifts from baseline values (green shaded areas) and fast spikes (yellow shaded areas), where HbO2 and HbR are correlated. Panel B shows the effect of the application of the tPCA approach for the correction of motion errors. HbO2 and HbR become anti-correlated after being properly corrected. Data refer to the study by Pinti et al., 2015.
