Detecting Motor Learning-Related fNIRS Activity by Applying Removal of Systemic Interferences

Isao NAMBU  Takahiro IMAI  Shota SAITO  Takanori SATO  Yasuhiro WADA  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E100-D   No.1   pp.242-245
Publication Date: 2017/01/01
Publicized: 2016/10/04
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2016EDL8132
Type of Manuscript: LETTER
Category: Biological Engineering
Keyword: 
fNIRS,  brain,  motor learning,  scalp artifact reduction,  

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Summary: 
Functional near-infrared spectroscopy (fNIRS) is a noninvasive neuroimaging technique, suitable for measurement during motor learning. However, effects of contamination by systemic artifacts derived from the scalp layer on learning-related fNIRS signals remain unclear. Here we used fNIRS to measure activity of sensorimotor regions while participants performed a visuomotor task. The comparison of results using a general linear model with and without systemic artifact removal shows that systemic artifact removal can improve detection of learning-related activity in sensorimotor regions, suggesting the importance of removal of systemic artifacts on learning-related cerebral activity.