<p>(a) Positioning of the 4 light sources (red) and 10 detectors (blue) with references to the nasion. (b) Sensitivity profile of the fNIRS probe used in this experiment projected onto a digital brain atlas based on the “Colin27” atlas [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0156512#pone.0156512.ref057" target="_blank">57</a>] commonly used in MRI studies. The colour scale depicts the sensitivity logarithmically. Both images were created using AtlasViewerGUI [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0156512#pone.0156512.ref058" target="_blank">58</a>].</p
