PMC4491622_01
(A) Channel configuration of the optode probe set. The NIRS probe set of 20 channels was positioned over the right and left inferior frontal gyrus. Red and blue circles illustrate positions of NIRS sensors and detectors, respectively, and the white rectangles mark the measured 20 channels. (B) Example of a topographical map, in which the 20 NIRS channel locations are additionally marked. (C) Projections of 10 NIRS channel positions (white points) on the cortical surface over the left hemisphere. NIRS positions are overlaid on an MNI-152 compatible canonical brain that is optimized for NIRS analysis according to a procedure by Singh et al..
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F1
Technologies (Glen Head, NY, USA), consisting of 8 photo-detectors and 8 light emitters resulting in a total of 20 channels (see Figure 1). The sampling rate of the NIRS system was set to 10 Hz. The channel configuration of the NIRS probe set is illustrated in Figure 1.